Document:

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                         REGISTRATION RIGHTS AGREEMENT
                         -----------------------------

     This REGISTRATION RIGHTS AGREEMENT (this "Agreement") dated as of September
13, 2000, by and among Careside, Inc., a Delaware corporation (the "Company"),
and the investors signatory hereto (each such investor is a "Purchaser" and all
such investors are, collectively, the "Purchasers").

                                R E C I T A L S

     WHEREAS, this Agreement is made pursuant to the Securities Purchase
Agreement, dated as of the date hereof, by and between the Company and RoyCap,
Inc. (the "Purchase Agreement").

     NOW, THEREFORE, IN CONSIDERATION of the mutual covenants contained in the
Purchase Agreement and in this Agreement, and for other good and valuable
consideration the receipt and adequacy of which are hereby acknowledged, the
Company and the Purchasers agree as follows:

1.   Definitions
     -----------

      Capitalized terms used and not otherwise defined herein that are defined
in the Purchase Agreement shall have the meanings given such terms in the
Purchase Agreement. As used in this Agreement, the following terms shall have
the following meanings:

     "Advice" shall have meaning set forth in Section 6(e).

     "Affiliate" means, with respect to any Person, any other Person that
directly or indirectly controls or is controlled by or under common control with
such Person. For the purposes of this definition, "control," when used with
respect to any Person, means the possession, direct or indirect, of the power to
direct or cause the direction of the management and policies of such Person,
whether through the ownership of voting securities, by contract or otherwise;
and the terms of "affiliated," "controlling" and "controlled" have meanings
correlative to the foregoing.

     "Business Day" means any day except Saturday, Sunday and any day which
shall be a federal legal holiday or a day on which banking institutions in the
State of New York and the State of California generally are authorized or
required by law or other governmental action to close.

     "Callable Common Warrant" shall have the meaning set forth in the Purchase

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Agreement.

     "Common Warrant" shall have the meaning set forth in the Purchase
Agreement.

     "Closing Date" shall have the meaning set forth in the Purchase Agreement.

     "Commission" means the Securities and Exchange Commission.

     "Common Stock" means the Company's common stock, $.001 par value per share
and any other securities into which such stock shall hereafter be redistributed
or recapitalized.

     "Effectiveness Date" means the 90th day following the Closing Date.

     "Effectiveness Period" shall have the meaning set forth in Section 2(a).

     "Exchange Act" means the Securities Exchange Act of 1934, as amended.

     "Filing Date" means the 30th day following the Closing Date.

     "Holder" or "Holders" means the holder or holders, as the case may be, from
time to time of Registrable Securities.

     "Indemnified Party" shall have the meaning set forth in Section 5(c).

     "Indemnifying Party" shall have the meaning set forth in Section 5(c).

     "Losses" shall have the meaning set forth in Section 5(a).

     "Person" means an individual or a corporation, partnership, trust,
incorporated or unincorporated association, joint venture, limited liability
company, joint stock company, government (or an agency or political subdivision
thereof) or other entity of any kind.

     "Preferred Shares" shall have the meaning set forth in the Purchase
Agreement.

     "Preferred Warrant" shall have the meaning set forth in the Purchase
Agreement.

     "Preferred Warrant Shares" shall have the meaning set forth in the Purchase
Agreement

     "Proceeding" means an action, claim, suit, investigation or proceeding
(including, without limitation, an investigation or partial proceeding, such as
a deposition), whether commenced or threatened.

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     "Prospectus" means the prospectus included in a Registration Statement
(including, without limitation, a prospectus that includes any information
previously omitted from a prospectus filed as part of an effective registration
statement in reliance upon Rule 430A promulgated under the Securities Act), as
amended or supplemented by any prospectus supplement, with respect to the terms
of the offering of any portion of the Registrable Securities covered by such
Registration Statement, and all other amendments and supplements to the
Prospectus, including post-effective amendments, and all material incorporated
by reference or deemed to be incorporated by reference in such Prospectus.

     "Registration Delay Payments" shall have the meaning set forth in Section
2(e).

     "Registrable Securities" means the shares of Common Stock issuable upon (i)
conversion of the Preferred Shares and Preferred Shares issuable upon exercise
of the Preferred Warrant and (ii) exercise of the Warrants.

     "Registration Statement" means the registration statement and any
additional registration statement contemplated by Section 2(a) and 2(f),
including (in each case) the Prospectus, amendments and supplements to such
registration statement or Prospectus, including pre- and post-effective
amendments, all exhibits thereto, and all material incorporated by reference or
deemed to be incorporated by reference in such registration statement.

     "Rule 144" means Rule 144 promulgated by the Commission pursuant to the
Securities Act, as such Rule may be amended from time to time, or any rule or
regulation hereafter adopted by the Commission to replace such Rule.

     "Rule 415" means Rule 415 promulgated by the Commission pursuant to the
Securities Act, as such Rule may be amended from time to time, or any rule or
regulation hereafter adopted by the Commission to replace such Rule.

     "Rule 424" means Rule 424 promulgated by the Commission pursuant to the
Securities Act, as such Rule may be amended from time to time, or any rule or
regulation hereafter adopted by the Commission to replace such Rule.

     "Securities Act" means the Securities Act of 1933, as amended, and the
rules and regulations promulgated thereunder.

     "Special Counsel" means one special counsel to the Holders for which the
Holders will be reimbursed by the Company pursuant to Section 4.

     "Transaction Documents" shall have the meaning set forth in the Purchase
Agreement.

     "Underwritten Registration or Underwritten Offering" means a registration
in

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connection with which securities of the Company are sold to an underwriter for
reoffering to the public pursuant to an effective registration statement.

     "Warrants" shall mean the Common Warrant, the Callable Common Warrant, the
Preferred Warrant and the warrant to purchase 50,000 shares of Common Stock
dated as of the date hereof and issued by the Company to Brighton Capital, Ltd.

2.   Shelf Registration
     ------------------

      (a) On or prior to the Filing Date, the Company shall prepare and file
with the Commission a "Shelf" Registration Statement registering for resale all
Registrable Securities for an offering to be made on a continuous basis pursuant
to Rule 415, unless the Holders shall elect to effect an Underwritten Offering
pursuant to Section 2(c) hereof. The Registration Statement shall be on Form S-3
(except if the Company is not then eligible to register for resale the
Registrable Securities on Form S-3, in which case such registration shall be on
another appropriate form in accordance herewith as the Holders may approve). The
Company shall use its best efforts to cause the Registration Statement to be
declared effective under the Securities Act as promptly as possible after the
filing thereof, but in any event prior to the Effectiveness Date, and shall use
its best efforts to keep such Registration Statement continuously effective
under the Securities Act until the date which is two (2) years after the date
that such Registration Statement is declared effective by the Commission or such
earlier date when all Registrable Securities covered by such Registration
Statement have been sold or may be sold without volume restrictions pursuant to
Rule 144(k) as determined by the counsel to the Company pursuant to a written
opinion letter to such effect, addressed and acceptable to the Company's
transfer agent (the "Effectiveness Period"), provided, that the Company shall
not be deemed to have used its best efforts to keep the Registration Statement
effective during the Effectiveness Period if it voluntarily takes any action
that would result in the Holders not being able to sell the Registrable
Securities covered by such Registration Statement during the Effectiveness
Period, unless such action is required under applicable law or the Company has
filed a post-effective amendment to the Registration Statement and the
Commission has not declared it effective.

      (b) The initial Registration Statement to be filed hereunder shall include
(but not be limited to) a number of shares of Common Stock equal to no less than
the sum of 200% of the number of shares of Common Stock that would be issuable
upon exercise in full of the outstanding Warrants and conversion in full of the
Preferred Shares and the Preferred Shares issuable upon exercise of the
Preferred Warrant, assuming all interest on the Preferred Shares is paid in
shares of Common Stock and that the Preferred Shares (except for the Preferred
Shares issuable upon exercise of the Preferred Warrant) remain outstanding for
two (2) years, and that such exercise and conversion occurred on the Closing
Date (the "Initial Minimum").

      (c) If the Holders of a majority of the Registrable Securities then
outstanding

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so elect, an offering of Registrable Securities pursuant to a Registration
Statement may be effected in the form of an Underwritten Offering. In such
event, and, if the managing underwriters advise the Company and such Holders in
writing that in their opinion the amount of Registrable Securities proposed to
be sold in such Underwritten Offering exceeds the amount of Registrable
Securities which can be sold in such Underwritten Offering, there shall be
included in such Underwritten Offering the amount of such Registrable Securities
which in the opinion of such managing underwriters can be sold, and such amount
shall be allocated pro rata among the Holders proposing to sell Registrable
Securities in such Underwritten Offering.

      (d) If any of the Registrable Securities are to be sold in an Underwritten
Offering, the investment banker that will administer the offering will be
selected by the Holders of a majority of the Registrable Securities included in
such offering upon consultation with the Company. No Holder may participate in
any Underwritten Offering hereunder unless such Holder (i) agrees to sell its
Registrable Securities on the basis provided in any underwriting agreements
approved by the Persons entitled hereunder to approve such arrangements and (ii)
completes and executes all questionnaires, powers of attorney, indemnities,
underwriting agreements and other documents required under the terms of such
arrangements.

      (e) If (i) a Registration Statement is not filed on or before the Filing
Date (if the Company files such Registration Statement without affording the
Holder the opportunity to review and comment on the same as required by Section
3(a) hereof, the Company shall not be deemed to have satisfied its requirement
to file set forth in 2(a)), or (ii) the Company fails to file with the
Commission a request to accelerate in accordance with Rule 12d1-2 promulgated
under the Exchange Act within five (5) business days of the date that the
Company is notified (orally or in writing, whichever is earlier) by the
Commission that a Registration Statement will not be "reviewed" or is not
subject to further review, or (iii) after a Registration Statement has been
declared effective by the Commission, such Registration Statement is either not
effective as to all Registrable Securities required to be covered thereby for
more than seven (7) consecutive days throughout the Effectiveness Period or the
Holders are not permitted for any reason to make sales for more than seven (7)
consecutive days thereunder throughout the Effectiveness Period, or (iv) trading
in the Common Stock shall be suspended from the American Stock Exchange ("ASE")
or a Subsequent Market (as defined herein) for more than (3) consecutive
Business Days or six (6) Business Days (which need not be consecutive days) in
the aggregate (any such failure or breach being referred to as an "Event," and
for purposes of clause (i) the date on which such Event occurs, or for purposes
of clause (ii) the date on which such five (5) day period is exceeded, or for
purposes of clause (iii) the date on which such seven (7) consecutive day period
is exceeded, or for purposes of clause (iv) either such third (3rd) Business Day
or the date on which such six (6) Business Day period is exceeded being referred
to as "Event Date"), then, in any such case, as partial relief for the damages
suffered therefrom by the Holder (which remedy shall not be exclusive of any
other remedies available at law or in

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equity), the Company shall on the Event Date and on each monthly anniversary
thereof until the triggering Event is cured, pay to the Holder an amount in
cash, as liquidated damages for the estimated cost to the Holders of not having
liquid securities in the time contemplated by the Transaction Documents and not
as a penalty, equal to 2% of the purchase price paid by such Holder pursuant to
the Purchase Agreement. The payments to which the Holders shall be entitled
pursuant to this Section are referred to herein as "Registration Delay
Payments." Registration Delay Payments shall be calculated on a cumulative basis
and paid within five (5) Business Days of the Event Date and each monthly
anniversary thereof. If the Company fails to make Registration Delay Payments in
a timely manner, such Registration Delay Payments shall bear interest at the
rate of 2.0% per month (or the maximum rate permitted by law), pro-rated for
partial months, until paid in full.

      (f) Notwithstanding anything to the contrary, if the Commission either (i)
refuses to declare effective or review a Registration Statement because shares
of Common Stock issuable upon exercise of the Callable Common Warrant or upon
conversion of the Preferred Warrant Shares are included in such Registration
Statement or (ii) deems all or any portion of the offering of the Registrable
Securities pursuant to the Registration Statement to be a primary offering of
Common Stock, then each of the Company and the Holders shall have the unilateral
right to terminate the Registration Statement with respect to any portion of the
Registrable Securities included therein which causes the Commission to take such
position without further liability of any kind with respect thereto, no
Registration Delay Payments shall apply with respect to the Company's failure to
register such shares of Common Stock and the Company will promptly file an
amendment to the Registration Statement removing such shares of Common Stock
from the Registration Statement. If the Company shall have filed the
Registration Statement on or prior to the Filing Date, upon receipt of written
or oral comments from the Commission relating to whether the inclusion of Common
Stock issuable upon exercise of the Callable Common Warrant or upon conversion
of the Preferred Warrant Shares in the Registration Statement is permissible,
the Company shall be entitled, promptly after the receipt of such comments from
the Commission and upon consent of the Purchasers (which consent shall not be
unreasonably withheld), to terminate the Registration Statement with respect to
any portion of the Registrable Securities it reasonably believes, on advice of
its outside counsel, should be removed in light of such comments, without
further liability of any kind with respect thereto, to file an amendment to the
Registration Statement removing such shares from the Registration Statement and
to issue such shares in a private placement exempt from the registration
requirements of the Securities Act, and, upon the timely filing of such an
amendment, the "Effectiveness Date" shall be adjusted to mean the 60th day
following the date of the filing of such an amendment.

3.   Registration Procedures
     -----------------------

      In connection with the Company's registration obligations hereunder, the

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Company shall:

       (a) Prepare and file with the Commission on or prior to the Filing Date,
a Registration Statement on Form S-3 (or if the Company is not then eligible to
register for resale the Registrable Securities on Form S-3 such registration
shall be on another appropriate form in accordance herewith, or, in connection
with an Underwritten Offering hereunder, such other form agreed to by the
Company and the Holders) which shall contain the "Plan of Distribution" attached
hereto as Annex A (except if otherwise directed by the Holders), and cause the
Registration Statement to become effective and remain effective as provided
herein; provided, however, that not less than five (5) Business Days prior to
the filing of a Registration Statement or any related Prospectus (other than a
Prospectus filed pursuant to Rule 424) and not less than one (1) Business Day
prior to the filing of any amendment or supplement thereto (including any
document that would be incorporated or deemed to be incorporated therein by
reference), the Company shall, (i) furnish to the Holders, their Special Counsel
and any managing underwriters, copies of all such documents proposed to be
filed, which documents (other than those incorporated or deemed to be
incorporated by reference) will be subject to the review of such Holders, their
Special Counsel and such managing underwriters, and (ii) cause its officers and
directors, counsel and independent certified public accountants to respond to
such inquiries as shall be necessary, in the reasonable opinion of respective
counsel to such Holders and such underwriters, to conduct a reasonable
investigation within the meaning of the Securities Act. The Company shall not
file the Registration Statement or any such Prospectus or any amendments or
supplements thereto to which the Holders of a majority of the Registrable
Securities, their Special Counsel, or any managing underwriters, shall
reasonably object on a timely basis.

      (b) (i) Prepare and file with the Commission such amendments, including
post-effective amendments, to the Registration Statement and the Prospectus used
in connection therewith as may be necessary to keep the Registration Statement
continuously effective as to the applicable Registrable Securities for the
Effectiveness Period and prepare and file with the Commission such additional
Registration Statements in order to register for resale under the Securities Act
all of the Registrable Securities; (ii) cause the related Prospectus to be
amended or supplemented by any required Prospectus supplement, and as so
supplemented or amended to be filed pursuant to Rule 424 (or any similar
provisions then in force); (iii) respond as promptly as reasonably possible, and
in any event within ten (10) days, to any comments received from the Commission
with respect to the Registration Statement or any amendment thereto and as
promptly as reasonably possible provide the Holders true and complete copies of
all correspondence from and to the Commission relating to the Registration
Statement; and (iv) comply in all material respects with the provisions of the
Securities Act and the Exchange Act with respect to the disposition of all
Registrable Securities covered by the Registration Statement during the
applicable period in accordance with the intended methods of disposition by the
Holders thereof set forth in the Registration Statement as so amended or in such
Prospectus as so supplemented.

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      (c)   (i)   File additional Registration Statements if the number of
Registrable Securities at any time exceeds 85% of the number of shares of Common
Stock then registered in a Registration Statement. The Company shall have thirty
(30) days to file such additional Registration Statements after its receipt of
notice of the requirement thereof which the Holders may give at any time when
the number of Registrable Securities exceeds 85% of the number of shares of
Common Stock then registered in a Registration Statement hereunder. In such
event, the Registration Statement required to be filed by the Company shall
include a number of shares of Common Stock equal to no less than the Initial
Minimum and any other Registrable Securities not then registered in a
Registration Statement.

      (d) Notify the Holders of Registrable Securities to be sold, their Special
Counsel and any managing underwriters as promptly as reasonably possible (and,
in the case of (i)(A) below, not less than five (5) Business Days) and (if
requested by any such Person) confirm such notice in writing no later than one
(1) Business Day following the day (i)(A) when a Prospectus or any Prospectus
supplement (other than a prospectus filed under Rule 424) or post-effective
amendment to the Registration Statement is proposed to be filed; (B) when the
Commission notifies the Company whether there will be a "review" of such
Registration Statement and whenever the Commission comments in writing on such
Registration Statement (the Company shall provide true and complete copies
thereof and all written responses thereto to each of the Holders); and (C) with
respect to the Registration Statement or any post-effective amendment, when the
same has become effective; (ii) of any request by the Commission or any other
Federal or state governmental authority for amendments or supplements to the
Registration Statement or Prospectus or for additional information; (iii) of the
issuance by the Commission of any stop order suspending the effectiveness of the
Registration Statement covering any or all of the Registrable Securities or the
initiation of any Proceedings for that purpose; (iv) and in the case of
Underwritten Offerings, if at any time any of the representations and warranties
of the Company contained in any agreement (including any underwriting agreement)
contemplated hereby ceases to be true and correct in all material respects; (v)
of the receipt by the Company of any notification with respect to the suspension
of the qualification or exemption from qualification of any of the Registrable
Securities for sale in any jurisdiction, or the initiation or threatening of any
Proceeding for such purpose; and (vi) of the occurrence of any event or passage
of time that makes the financial statements included in the Registration
Statement ineligible for inclusion therein or any statement made in the
Registration Statement or Prospectus or any document incorporated or deemed to
be incorporated therein by reference untrue in any material respect or that
requires any revisions to the Registration Statement, Prospectus or other
documents so that, in the case of the Registration Statement or the Prospectus,
as the case may be, it will not contain any untrue statement of a material fact
or omit to state any material fact required to be stated therein or necessary to
make the statements therein, in light of the circumstances under which they were
made, not misleading.

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      (e)   Use its best efforts to avoid the issuance of, or, if issued, obtain
the withdrawal of (i) any order suspending the effectiveness of the Registration
Statement, or (ii) any suspension of the qualification (or exemption from
qualification) of any of the Registrable Securities for sale in any
jurisdiction, at the earliest practicable moment.

      (f)   If requested by any managing underwriter or the Holders of a
majority in interest of the Registrable Securities to be sold in connection with
an Underwritten Offering, (i) promptly incorporate in a Prospectus supplement or
post-effective amendment to the Registration Statement such information as such
managing underwriters and such Holders reasonably agree should be included
therein, and (ii) make all required filings of such Prospectus supplement or
such post-effective amendment as soon as practicable after the Company has
received notification of the matters to be incorporated in such Prospectus
supplement or post-effective amendment; provided, however, that the Company
shall not be required to take any action pursuant to this Section 3(f) that
would, in the opinion of counsel for the Company, violate applicable law or be
materially detrimental to the business prospects of the Company.

      (g)   Furnish to each Holder, their Special Counsel and any managing
underwriters, without charge, at least one conformed copy of each Registration
Statement and each amendment thereto, including financial statements and
schedules, all documents incorporated or deemed to be incorporated therein by
reference, and all exhibits to the extent requested by such Person (including
those previously furnished or incorporated by reference) promptly after the
filing of such documents with the Commission.

      (h)   Promptly deliver to each Holder, their Special Counsel, and any
underwriters, without charge, as many copies of the Prospectus or Prospectuses
(including each form of prospectus) and each amendment or supplement thereto as
such Persons may reasonably request; and the Company hereby consents to the use
of such Prospectus and each amendment or supplement thereto by each of the
selling Holders and any underwriters in connection with the offering and sale of
the Registrable Securities covered by such Prospectus and any amendment or
supplement thereto.

      (i)   Prior to any public offering of Registrable Securities, use its best
efforts to register or qualify or cooperate with the selling Holders, any
underwriters and their Special Counsel in connection with the registration or
qualification (or exemption from such registration or qualification) of such
Registrable Securities for offer and sale under the securities or Blue Sky laws
of such jurisdictions within the United States as any Holder or underwriter
requests in writing, to keep each such registration or qualification (or
exemption therefrom) effective during the Effectiveness Period and to do any and
all other acts or things necessary or advisable to enable the disposition in
such jurisdictions of the Registrable Securities covered by a Registration
Statement; provided, however, that the Company shall not be required to qualify
generally to do business in any jurisdiction where it is not then so qualified
or to take any action that would subject it to general service of process in any
such jurisdiction where it is not then so subject or

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subject the Company to any material tax in any such jurisdiction where it is not
then so subject.

      (j)   Cooperate with the Holders and any managing underwriters to
facilitate the timely preparation and delivery of certificates representing
Registrable Securities to be delivered to a transferee pursuant to a
Registration Statement, which certificates shall be free, to the extent
permitted by the Purchase Agreement and applicable federal and state securities
laws, of all restrictive legends, and to enable such Registrable Securities to
be in such denominations and registered in such names as any such managing
underwriters or Holders may request.

      (k)   Upon the occurrence of any event contemplated by Section 3(d)(vi),
as promptly as reasonably possible, prepare a supplement or amendment, including
a post-effective amendment, to the Registration Statement or a supplement to the
related Prospectus or any document incorporated or deemed to be incorporated
therein by reference, and file any other required document so that, as
thereafter delivered, neither the Registration Statement nor such Prospectus
will contain an untrue statement of a material fact or omit to state a material
fact required to be stated therein or necessary to make the statements therein,
in light of the circumstances under which they were made, not misleading.

      (l)   Use its best efforts to cause all Registrable Securities relating to
such Registration Statement to be listed on the ASE or on any other stock market
or trading facility on which the shares of Common Stock are traded, listed or
quoted (each a "Subsequent Market") as and when required pursuant to the
Purchase Agreement.

      (m)   In the event of an Underwritten Offering, enter into such agreements
(including an underwriting agreement in form, scope and substance as is
customary in Underwritten Offerings) and take all such other actions in
connection therewith (including those reasonably requested by any managing
underwriters and the Holders of a majority of the Registrable Securities being
sold) in order to expedite or facilitate the disposition of such Registrable
Securities, which agreements and actions shall be subject to the reasonable
approval of counsel of the Company, (i) make such representations and warranties
to such Holders and such underwriters as are customarily made by issuers to
underwriters in underwritten public offerings, and confirm the same if and when
requested; (ii) in the case of an Underwritten Offering obtain and deliver
copies thereof to each Holder that is a selling shareholder thereunder and the
managing underwriters, if any, of opinions of counsel to the Company and updates
thereof addressed to each such underwriter, in form, scope and substance
reasonably satisfactory to any such managing underwriters and Special Counsel to
the selling Holders covering the matters customarily covered in opinions
requested in Underwritten Offerings and such other matters as may be reasonably
requested by such Special Counsel and underwriters; (iii) in the case of an
Underwritten Offering, if required by the managing underwriters, at the time of
delivery of any Registrable Securities sold pursuant thereto, use its
commercially reasonable

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efforts to obtain and deliver copies to the Holders and the managing
underwriters, if any, of "cold comfort" letters and updates thereof from the
independent certified public accountants of the Company (and, if necessary, any
other independent certified public accountants of any subsidiary of the Company
or of any business acquired by the Company for which financial statements and
financial data is, or is required to be, included in the Registration
Statement), addressed to the Company in form and substance as are customary in
connection with Underwritten Offerings; (iv) if an underwriting agreement is
entered into, the same shall contain indemnification provisions and procedures
no less favorable to the selling Holders and the underwriters, if any, than
those set forth in Section 5 (or such other provisions and procedures acceptable
to the managing underwriters, if any, and holders of a majority of Registrable
Securities participating in such Underwritten Offering); and (v) deliver such
documents and certificates as may be reasonably requested by the Holders of a
majority of the Registrable Securities being sold, their Special Counsel and any
managing underwriters to evidence the continued validity of the representations
and warranties made pursuant to Section 3(m)(i) above and to evidence compliance
with any customary conditions contained in the underwriting agreement or other
agreement entered into by the Company.

     (n)    Make available for inspection by the selling Holders, any
representative of such Holders, any underwriter participating in any disposition
of Registrable Securities, and any attorney or accountant retained by such
selling Holders or underwriters, at the offices where normally kept, during
reasonable business hours and upon reasonable notice to the Company, all
financial and other records, pertinent corporate documents and properties of the
Company and its subsidiaries, and cause the officers, directors, agents and
employees of the Company and its subsidiaries to supply all information in each
case reasonably requested by any such Holder, representative, underwriter,
attorney or accountant in connection with the Registration Statement; provided,
however, that any information that is determined in good faith by the Company in
writing to be of a confidential nature at the time of delivery of such
information shall be kept confidential by such Persons, unless (i) disclosure of
such information is required by court or administrative order or is necessary to
respond to inquiries of regulatory authorities; (ii) disclosure of such
information, in the opinion of counsel to such Person, is required by law; (iii)
such information becomes generally available to the public other than as a
result of a disclosure or failure to safeguard by such Person; or (iv) such
information becomes available to such Person from a source other than the
Company and such source is not known by such Person to be bound by a
confidentiality agreement with the Company.

      (o)   Comply with all applicable rules and regulations of the Commission.

      (p)   The Company may require each selling Holder to furnish to the
Company such information regarding the distribution of such Registrable
Securities and the beneficial ownership of Common Stock held by such Holder as
is required by law to be disclosed in the Registration Statement, and the
Company may exclude from such

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registration the Registrable Securities of any such Holder who fails to furnish
such information within a reasonable time after receiving such request. If the
Registration Statement refers to any Holder by name or otherwise as the holder
of any securities of the Company, then such Holder shall have the right to
require (if such reference to such Holder by name or otherwise is not required
by the Securities Act or any similar Federal statute then in force) the deletion
of the reference to such Holder in any amendment or supplement to the
Registration Statement filed or prepared subsequent to the time that such
reference ceases to be required.

     Each Holder agrees that, other than ordinary course brokerage arrangements,
in the event it enters into any arrangement with a broker-dealer for the sale of
any Registrable Securities through a block trade, special offering, exchange
distribution or secondary distribution or a purchase by a broker or dealer, such
Holder shall promptly deliver to the Company in writing all applicable
information required in order for the Company to be able to timely file a
supplement to the Prospectus pursuant to Rule 424(b) under the Securities Act.
Such information shall include a description of (i) the name of such Holder and
of the participating broker-dealer(s), (ii) the number of Registrable Securities
involved, (iii) the price at which such Registrable Securities were or are to be
sold, and (iv) the commissions paid or to be paid or discounts or concessions
allowed or to be allowed to such broker-dealer(s), where applicable.

4.   Registration Expenses
     ---------------------

      (a) All fees and expenses incident to the performance of or compliance
with this Agreement by the Company, except as and to the extent specified in
Section 5(b), shall be borne by the Company whether or not pursuant to an
Underwritten Offering and whether or not the Registration Statement is filed or
becomes effective and whether or not any Registrable Securities are sold
pursuant to the Registration Statement. The fees and expenses referred to in the
foregoing sentence shall include, without limitation, (i) all registration and
filing fees (including, without limitation, fees and expenses (A) with respect
to filings required to be made with the ASE and any Subsequent Market on which
the Common Stock is then listed for trading, and (B) in compliance with state
securities or Blue Sky laws (including, without limitation, fees and
disbursements of counsel for the Holders in connection with Blue Sky
qualifications or exemptions of the Registrable Securities and determination of
the eligibility of the Registrable Securities for investment under the laws of
such jurisdictions as the managing underwriters, if any, or the Holders of a
majority of Registrable Securities may designate)), (ii) printing expenses
(including, without limitation, expenses of printing certificates for
Registrable Securities and of printing prospectuses if the printing of
prospectuses is requested by the managing underwriters, if any, or by the
holders of a majority of the Registrable Securities included in the Registration
Statement), (iii) messenger, telephone and delivery expenses of the Company,
(iv) fees and disbursements of counsel for the Company and Special Counsel for
the Holders (not to exceed $7,500), (v) Securities Act liability insurance, if
the Company so desires such insurance, and (vi) fees and expenses of all other
Persons

                                      -12-
<PAGE>

retained by the Company in connection with the consummation of the transactions
contemplated by this Agreement. In addition, the Company shall be responsible
for all of its internal expenses incurred in connection with the consummation of
the transactions contemplated by this Agreement (including, without limitation,
all salaries and expenses of its officers and employees performing legal or
accounting duties), the expense of any annual audit, the fees and expenses
incurred in connection with the listing of the Registrable Securities on any
securities exchange as required hereunder.

      (b)   If the Holders require an Underwritten Offering pursuant to the
terms hereof, the Company shall be responsible for all costs, fees and expenses
in connection therewith, except for the fees and disbursements of the
Underwriters (including any underwriting commissions and discounts) and their
legal counsel and accountants. By way of illustration which is not intended to
detract from the provisions of Section 5(a), the Holders shall not be
responsible for, and the Company shall be required to pay the fees or
disbursements incurred by the Company (including by its legal counsel and
accountants) in connection with, the preparation and filing of a Registration
Statement and related Prospectus for such offering, the maintenance of such
Registration Statement in accordance with the terms hereof, the listing of the
Registrable Securities in accordance with the requirements hereof, and printing
expenses incurred to comply with the requirements hereof.

5.   Indemnification
     ---------------

      (a) Indemnification by the Company. The Company shall, notwithstanding any
          ------------------------------
termination of this Agreement, indemnify and hold harmless each Holder, the
officers, directors, agents (including any underwriters retained by such Holder
in connection with the offer and sale of Registrable Securities), investment
advisors and employees of each of them, each Person who controls any such Holder
(within the meaning of Section 15 of the Securities Act or Section 20 of the
Exchange Act) and the officers, directors, agents and employees of each such
controlling Person, to the fullest extent permitted by applicable law, from and
against any and all losses, claims, damages, liabilities, costs (including,
without limitation, costs of preparation and reasonable attorneys' fees) and
expenses (collectively, "Losses"), as incurred, arising out of or relating to
any untrue or alleged untrue statement of a material fact contained in the
Registration Statement, any Prospectus or any form of prospectus or in any
amendment or supplement thereto or in any preliminary prospectus, or arising out
of or relating to any omission or alleged omission of a material fact required
to be stated therein or necessary to make the statements therein (in the case of
any Prospectus or form of prospectus or supplement thereto, in light of the
circumstances under which they were made) not misleading, except to the extent,
but only to the extent, that (1) such untrue statements or omissions are based
solely upon information regarding such Holder furnished in writing to the
Company by such Holder expressly for use therein, or to the extent that such
information relates to such Holder or such Holder's proposed method of
distribution of

                                      -13-
<PAGE>

Registrable Securities and was reviewed and expressly approved in writing by
such Holder for use in the Registration Statement, such Prospectus or such form
of Prospectus or in any amendment or supplement thereto or (2) in the case of an
occurrence of an event of the type specified in Section 3(d)(ii)-(vi), the use
by such Holder of an outdated or defective Prospectus after the Company has
notified such Holder in writing that the Prospectus is outdated or defective and
prior to the receipt by such Holder of the Advice contemplated in Section 6(e).
The Company shall notify the Holders promptly of the institution, threat or
assertion of any Proceeding of which the Company is aware in connection with the
transactions contemplated by this Agreement.

      (b)   Indemnification by Holders. Each Holder shall, severally and not
            --------------------------
jointly, indemnify and hold harmless the Company, its directors, officers,
agents and employees, each Person who controls the Company (within the meaning
of Section 15 of the Securities Act and Section 20 of the Exchange Act), and the
directors, officers, agents or employees of such controlling Persons, to the
fullest extent permitted by applicable law, from and against all Losses (as
determined by a court of competent jurisdiction in a final judgment not subject
to appeal or review) arising solely out of or based solely upon any untrue
statement of a material fact contained in the Registration Statement, any
Prospectus, or any form of prospectus, or in any amendment or supplement
thereto, or arising solely out of or based solely upon any omission of a
material fact required to be stated therein or necessary to make the statements
therein not misleading to the extent, but only to the extent, that such untrue
statement or omission is contained in any information so furnished in writing by
such Holder to the Company specifically for inclusion in the Registration
Statement or such Prospectus or to the extent that such information relates to
such Holder or such Holder's proposed method of distribution of Registrable
Securities and was reviewed and expressly approved in writing by such Holder
expressly for use in the Registration Statement, such Prospectus or such form of
Prospectus, or in any amendment or supplement thereto. In no event shall the
liability of any selling Holder hereunder be greater in amount than the dollar
amount of the net proceeds received by such Holder upon the sale of the
Registrable Securities giving rise to such indemnification obligation.

      (c)   Conduct of Indemnification Proceedings. If any Proceeding shall be
            --------------------------------------
brought or asserted against any Person entitled to indemnity hereunder (an
"Indemnified Party"), such Indemnified Party shall promptly notify the Person
from whom indemnity is sought (the "Indemnifying Party") in writing, and the
Indemnifying Party shall assume the defense thereof, including the employment of
counsel reasonably satisfactory to the Indemnified Party and the payment of all
fees and expenses incurred in connection with defense thereof; provided, that
the failure of any Indemnified Party to give such notice shall not relieve the
Indemnifying Party of its obligations or liabilities pursuant to this Agreement,
except (and only) to the extent that it shall be finally determined by a court
of competent jurisdiction (which determination is not subject to appeal or
further review) that such failure shall have proximately and materially
adversely prejudiced the Indemnifying Party.

                                      -14-
<PAGE>

      An Indemnified Party shall have the right to employ separate counsel in
any such Proceeding and to participate in the defense thereof, but the fees and
expenses of such counsel shall be at the expense of such Indemnified Party or
Parties unless: (1) the Indemnifying Party has agreed in writing to pay such
fees and expenses; or (2) the Indemnifying Party shall have failed promptly to
assume the defense of such Proceeding and to employ counsel reasonably
satisfactory to such Indemnified Party in any such Proceeding; or (3) the named
parties to any such Proceeding (including any impleaded parties) include both
such Indemnified Party and the Indemnifying Party, and such Indemnified Party
shall have been advised by counsel that a conflict of interest is likely to
exist if the same counsel were to represent such Indemnified Party and the
Indemnifying Party (in which case, if such Indemnified Party notifies the
Indemnifying Party in writing that it elects to employ separate counsel at the
expense of the Indemnifying Party, the Indemnifying Party shall not have the
right to assume the defense thereof and such counsel shall be at the expense of
the Indemnifying Party). The Indemnifying Party shall not be liable for any
settlement of any such Proceeding effected without its written consent, which
consent shall not be unreasonably withheld. No Indemnifying Party shall, without
the prior written consent of the Indemnified Party, effect any settlement of any
pending Proceeding in respect of which any Indemnified Party is a party, unless
such settlement includes an unconditional release of such Indemnified Party from
all liability on claims that are the subject matter of such Proceeding.

      All fees and expenses of the Indemnified Party (including reasonable fees
and expenses to the extent incurred in connection with investigating or
preparing to defend such Proceeding in a manner not inconsistent with this
Section) shall be paid to the Indemnified Party, as incurred, within ten (10)
Business Days of written notice thereof to the Indemnifying Party (regardless of
whether it is ultimately determined that an Indemnified Party is not entitled to
indemnification hereunder; provided, that the Indemnifying Party may require
such Indemnified Party to undertake to reimburse all such fees and expenses to
the extent it is finally judicially determined that such Indemnified Party is
not entitled to indemnification hereunder).

      (d)   Contribution. If a claim for indemnification under Section 5(a) or
            ------------
5(b) is unavailable to an Indemnified Party (by reason of public policy or
otherwise), then each Indemnifying Party, in lieu of indemnifying such
Indemnified Party, shall contribute to the amount paid or payable by such
Indemnified Party as a result of such Losses, in such proportion as is
appropriate to reflect the relative fault of the Indemnifying Party and
Indemnified Party in connection with the actions, statements or omissions that
resulted in such Losses as well as any other relevant equitable considerations.
The relative fault of such Indemnifying Party and Indemnified Party shall be
determined by reference to, among other things, whether any action in question,
including any untrue or alleged untrue statement of a material fact or omission
or alleged omission of a material fact, has been taken or made by, or relates to
information supplied by, such Indemnifying Party or

                                      -15-
<PAGE>

Indemnified Party, and the parties' relative intent, knowledge, access to
information and opportunity to correct or prevent such action, statement or
omission. The amount paid or payable by a party as a result of any Losses shall
be deemed to include, subject to the limitations set forth in Section 5(c), any
reasonable attorneys' or other reasonable fees or expenses incurred by such
party in connection with any Proceeding to the extent such party would have been
indemnified for such fees or expenses if the indemnification provided for in
this Section was available to such party in accordance with its terms.

      The parties hereto agree that it would not be just and equitable if
contribution pursuant to this Section 5(d) were determined by pro rata
allocation or by any other method of allocation that does not take into account
the equitable considerations referred to in the immediately preceding paragraph.
Notwithstanding the provisions of this Section 5(d), no Holder shall be required
to contribute, in the aggregate, any amount in excess of the amount by which the
proceeds actually received by such Holder from the sale of the Registrable
Securities subject to the Proceeding exceeds the amount of any damages that such
Holder has otherwise been required to pay by reason of such untrue or alleged
untrue statement or omission or alleged omission. No Person guilty of fraudulent
misrepresentation (within the meaning of Section 11(f) of the Securities Act)
shall be entitled to contribution from any Person who was not guilty of such
fraudulent misrepresentation.

      The indemnity and contribution agreements contained in this Section are in
addition to any liability that the Indemnifying Parties may have to the
Indemnified Parties.

6.   Miscellaneous
     -------------

      (a)   Remedies. In the event of a breach by the Company or by a Holder, of
            --------
any of their obligations under this Agreement, each Holder or the Company, as
the case may be, in addition to being entitled to exercise all rights granted by
law and under this Agreement, including recovery of damages, will be entitled to
specific performance of its rights under this Agreement. The Company and each
Holder agree that monetary damages would not provide adequate compensation for
any losses incurred by reason of a breach by it of any of the provisions of this
Agreement and hereby further agrees that, in the event of any action for
specific performance in respect of such breach, it shall waive the defense that
a remedy at law would be adequate.

      (b)   No Inconsistent Agreements. Neither the Company nor any of its
            --------------------------
subsidiaries has entered, as of the date hereof, nor shall the Company or any of
its subsidiaries, on or after the date of this Agreement, enter into any
agreement with respect to its securities that is inconsistent with the rights
granted to the Holders in this Agreement or otherwise conflicts with the
provisions hereof. Except as and to the extent specified in Schedule 6(b)
hereto, neither the Company nor any of its subsidiaries has previously entered
into any agreement granting any registration rights with respect to any

                                      -16-
<PAGE>

of its securities to any Person that have not been satisfied in full.

      (d)   Compliance. Each Holder covenants and agrees that it will comply
            ----------
with the prospectus delivery requirements of the Securities Act as applicable to
it in connection with sales of Registrable Securities pursuant to the
Registration Statement.

      (e)   Discontinued Disposition. Each Holder agrees by its acquisition of
            ------------------------
such Registrable Securities that, upon receipt of a notice from the Company of
the occurrence of any event of the kind described in Sections 3(d)(ii),
3(d)(iii), 3(d)(iv), 3(d)(v) or 3(d)(vi), such Holder will forthwith discontinue
disposition of such Registrable Securities under the Registration Statement
until such Holder's receipt of the copies of the supplemented Prospectus and/or
amended Registration Statement contemplated by Section 3(k), or until it is
advised in writing (the "Advice") by the Company that the use of the applicable
Prospectus may be resumed, and, in either case, has received copies of any
additional or supplemental filings that are incorporated or deemed to be
incorporated by reference in such Prospectus or Registration Statement. The
Company may provide appropriate stop orders to enforce the provisions of this
paragraph.

      (f)   Piggy-Back Registrations. If at any time when there is not an
            ------------------------
effective Registration Statement covering all of the Registrable Securities then
outstanding and the Company shall determine to prepare and file with the
Commission a registration statement relating to an offering for its own account
or the account of others under the Securities Act of any of its equity
securities, other than on Form S-4 or Form S-8 (each as promulgated under the
Securities Act) or their then equivalents relating to equity securities to be
issued solely in connection with any acquisition of any entity or business or
equity securities issuable in connection with stock option or other employee
benefit plans, then the Company shall send to each Holder of Registrable
Securities written notice of such determination and, if within twenty (20) days
after receipt of such notice, any such holder shall so request in writing, the
Company shall include in such registration statement all or any part of such
Registrable Securities such holder requests to be registered. If any
registration of the Company pursuant to this Section 6(f) is for a registered
public offering involving an underwriting, the right of any Holder to
registration shall be conditioned upon such Holder's entering into an
underwriting agreement and/or lock-up agreement in customary forms with the
representative of the underwriter or underwriters.

      (g)   Amendments and Waivers. The provisions of this Agreement, including
            ----------------------
the provisions of this sentence, may not be amended, modified or supplemented,
and waivers or consents to departures from the provisions hereof may not be
given, unless the same shall be in writing and signed by the Company and the
Holders of at least two-thirds of the then outstanding Registrable Securities.
Notwithstanding the foregoing, a waiver or consent to depart from the provisions
hereof with respect to a matter that relates exclusively to the rights of
Holders and that does not directly or indirectly affect the rights of other
Holders may be given by Holders of at least a majority of the

                                      -17-
<PAGE>

Registrable Securities to which such waiver or consent relates; provided,
however, that the provisions of this sentence may not be amended, modified, or
supplemented except in accordance with the provisions of the immediately
preceding sentence.

      (h)   Notices. Any and all notices or other communications or deliveries
            -------
required or permitted to be provided hereunder shall be in writing and shall be
deemed given and effective on the earliest of (i) the date of transmission, if
such notice or communication is delivered via facsimile at the facsimile
telephone number specified in this Section prior to 8:00 p.m. (New York City
time) on a Business Day, (ii) the Business Day after the date of transmission,
if such notice or communication is delivered via facsimile at the facsimile
telephone number specified in the Purchase Agreement later than 8:00 p.m. (New
York City time) on any date and earlier than 11:59 p.m. (New York City time) on
such date, (iii) the Business Day following the date of mailing, if sent by
nationally recognized overnight courier service, or (iv) if sent other than by
the methods set forth in (i)-(iii) of this section, upon actual receipt by the
party to whom such notice is required to be given. The address for such notices
and communications shall be as follows:

                             Careside, Inc.
                             6100 Bristol Parkway
                             Culver City, CA 90230
                             Attn: W. Vickery Stoughton

                    With a copy to:

                             Pepper Hamilton LLP
                             3000 Two Logan Square
                             Eighteenth and Arch Streets
                             Philadelphia, PA 19103
                             Attn: Julia D. Corelli, Esq.

If to any other Person who is then the registered Holder: To the address of such
Holder as it appears in the stock transfer books of the Company or such other
address as may be designated in writing hereafter, in the same manner, by such
Person.

      (i)   Successors and Assigns. This Agreement shall inure to the benefit of
            ----------------------
and be binding upon the successors and permitted assigns of each of the parties
and shall inure to the benefit of each Holder. The Company may not assign its
rights or obligations hereunder without the prior written consent of each
Holder. Each Holder may assign their respective rights hereunder in the manner
and to the Persons as permitted under this Agreement and the Purchase Agreement.

      (j)   Counterparts. This Agreement may be executed in any number of
            ------------
counterparts, each of which when so executed shall be deemed to be an original
and, all of which taken together shall constitute one and the same Agreement. In
the event that

                                      -18-
<PAGE>

any signature is delivered by facsimile transmission, such signature shall
create a valid binding obligation of the party executing (or on whose behalf
such signature is executed) the same with the same force and effect as if such
facsimile signature were the original thereof.

      (k)   Governing Law. This Agreement shall be governed by and construed and
            -------------
enforced in accordance with the internal laws of the State of Delaware without
regard to the principles of conflicts of law thereof. Each party hereby
irrevocably submits to the exclusive jurisdiction of the state and federal
courts sitting in the County of Los Angeles, State of California, for the
adjudication of any dispute hereunder or in connection herewith or with any
transaction contemplated hereby or discussed herein (including with respect to
the enforcement of any of the Transaction Documents) and hereby irrevocably
waives, and agrees not to assert in any suit, action or proceeding, any claim
that it is not personally subject to the jurisdiction of any such court, that
such suit, action or proceeding is improper. Each party hereby irrevocably
waives personal service of process and consents to process being served in any
such suit, action or proceeding by mailing a copy thereof to such party at the
address in effect for notices to it under this Agreement and agrees that such
service shall constitute good and sufficient service of process and notice
thereof. Nothing contained herein shall be deemed to limit in any way any right
to serve process in any manner permitted by law.

      (l)   Cumulative Remedies. The remedies provided herein are cumulative and
            -------------------
not exclusive of any remedies provided by law.

      (m)   Severability. If any term, provision, covenant or restriction of
            ------------
this Agreement is held by a court of competent jurisdiction to be invalid,
illegal, void or unenforceable, the remainder of the terms, provisions,
covenants and restrictions set forth herein shall remain in full force and
effect and shall in no way be affected, impaired or invalidated, and the parties
hereto shall use their reasonable efforts to find and employ an alternative
means to achieve the same or substantially the same result as that contemplated
by such term, provision, covenant or restriction. It is hereby stipulated and
declared to be the intention of the parties that they would have executed the
remaining terms, provisions, covenants and restrictions without including any of
such that may be hereafter declared invalid, illegal, void or unenforceable.

      (n)   Headings. The headings in this Agreement are for convenience of
            --------
reference only and shall not limit or otherwise affect the meaning hereof.

      (o)   Shares Held by the Company and its Affiliates. Whenever the consent
            ---------------------------------------------
or approval of Holders of a specified percentage of Registrable Securities is
required hereunder, Registrable Securities held by the Company or its Affiliates
(other than any Holder or transferees or successors or assigns thereof if such
Holder is deemed to be an Affiliate solely by reason of its holdings of such
Registrable Securities) shall not be counted in determining whether such consent
or approval was given by the Holders of

                                      -19-
<PAGE>

such required percentage.

      (p)   Independent Nature of Purchasers' Obligations and Rights. The
            --------------------------------------------------------
obligations of each Purchaser hereunder is several and not joint with the
obligations of any other Purchaser hereunder, and neither Purchaser shall be
responsible in any way for the performance of the obligations of any other
Purchaser hereunder. Nothing contained herein or in any other agreement or
document delivered at any closing, and no action taken by any Purchaser pursuant
hereto or thereto, shall be deemed to constitute the Purchasers as a
partnership, an association, a joint venture or any other kind of entity, or
create a presumption that the Purchasers are in any way acting in concert with
respect to such obligations or the transactions contemplated by this Agreement.
Each Purchaser shall be entitled to protect and enforce its rights, including
without limitation the rights arising out of this Agreement, and it shall not be
necessary for any other Purchaser to be joined as an additional party in any
proceeding for such purpose.

                                      -20-
<PAGE>

     IN WITNESS WHEREOF, the parties have executed this Registration Rights
Agreement as of the date first written above.

                              CARESIDE, INC.,
                              a Delaware corporation

                              ____________________________________
                              W. Vickery Stoughton
                              Chairman and Chief Executive Officer

                              BRIGHTON CAPITAL, LTD.

                              By:_________________________________
                              Name:
                              Title:

                              ROYCAP, INC.

                              By:_________________________________
                              Name:
                              Title:

                                      -21-
<PAGE>

                                    Annex A

                             PLAN OF DISTRIBUTION

     The Selling Stockholders and any of their pledgees, assignees and
successors-in-interest may, from time to time, sell any or all of their shares
of Common Stock on any stock exchange, market or trading facility on which the
shares are traded. These sales may be at fixed or negotiated prices. The Selling
Stockholders may use any one or more of the following methods when selling
shares:

-        ordinary brokerage transactions and transactions in which the broker-
dealer solicits purchasers;

-        block trades in which the broker-dealer will attempt to sell the shares
as agent but may position and resell a portion of the block as principal to
facilitate the transaction;

-        purchases by a broker-dealer as principal and resale by the broker-
dealer for its account;

-        an exchange distribution in accordance with the rules of the applicable
exchange;

-        privately negotiated transactions;

-        short sales;

-        broker-dealers may agree with the Selling Stockholders to sell a
specified number of such shares at a stipulated price per share;

-        a combination of any such methods of sale; and

-        any other method permitted pursuant to applicable law.

          The Selling Stockholders may also sell shares under Rule 144 under the
Securities Act, if available, rather than under this prospectus.

          The Selling Stockholders may also engage in short sales against the
box, puts and calls and other transactions in securities of the Company or
derivatives of Company securities and may sell or deliver shares in connection
with these trades. The Selling Stockholders may pledge their shares to their
brokers under the margin provisions of customer agreements. If a Selling
Stockholder defaults on a margin loan, the broker may, from time to time, offer
and sell the pledged shares. The Selling Stockholders have advised the Company
that they have not entered into any agreements, understandings or

                                      -22-
<PAGE>

arrangements with any underwriters or broker-dealers regarding the sale of their
shares other than ordinary course brokerage arrangements, nor is there an
underwriter or coordinating broker acting in connection with the proposed sale
of shares by the Selling Stockholders.

      Broker-dealers engaged by the Selling Stockholders may arrange for other
brokers-dealers to participate in sales. Broker-dealers may receive commissions
or discounts from the Selling Stockholders (or, if any broker-dealer acts as
agent for the purchaser of shares, from the purchaser) in amounts to be
negotiated. The Selling Stockholders do not expect these commissions and
discounts to exceed what is customary in the types of transactions involved.

      The Selling Stockholders and any broker-dealers or agents that are
involved in selling the shares may be deemed to be "underwriters" within the
meaning of the Securities Act in connection with such sales. In such event, any
commissions received by such broker-dealers or agents and any profit on the
resale of the shares purchased by them may be deemed to be underwriting
commissions or discounts under the Securities Act.

      The Company is required to pay all fees and expenses incident to the
registration of the shares, including fees and disbursements of counsel to the
Selling Stockholders. The Company has agreed to indemnify the Selling
Stockholders against certain losses, claims, damages and liabilities, including
liabilities under the Securities Act.

      Upon the Company being notified by a Selling Stockholder that any material
arrangement has been entered into with a broker-dealer for the sale of shares
through a block trade, special offering, exchange distribution or secondary
distribution or a purchase by a broker or dealer, a supplement to this
prospectus will be filed, if required, pursuant to Rule 424(b) under the
Securities Act, disclosing (i) the name of each such Selling Stockholder and of
the participating broker-dealer(s), (ii) the number of shares involved, (iii)
the price at which such shares were sold, (iv) the commissions paid or discounts
or concessions allowed to such broker-dealer(s), where applicable, (v) that such
broker-dealer(s) did not conduct any investigation to verify the information set
out or incorporated by reference in this prospectus, and (vi) other facts
material to the transaction. In addition, upon the Company being notified by a
Selling Stockholder that a donee or pledgee intends to sell more than 500
shares, a supplement to this prospectus will be filed.

      The Company has advised the Selling Stockholders that the anti-
manipulative provisions of Regulation M promulgated under the Exchange Act may
apply to their sales of the shares offered hereby.

                                      -23-
<PAGE>

              Schedule 6(b) to the Registration Rights Agreement
              --------------------------------------------------

     1.   Registration Rights Agreement by and between Careside, Inc. (formerly
Exigent Diagnostics, Inc.) and the investors signatory therein, dated March 8,
1998, as it relates to 348,212 shares of Common Stock held by:

                    W. Vickery Stoughton
                    Thomas H. Grove
                    Kevin Kimberlin and his affiliates.

     2.   Registration Rights Agreement by and between Careside, Inc. (formerly
Exigent Diagnostics, Inc.), W. Vickery Stoughton, Thomas H. Grove, Kenneth B.
Asach, William S. Knight, Donald S. Wong, Ashok K. Sawhney and Philip B. Smith,
as amended by Amendment No. 1, dated as of January 31, 1997, as it relates to
968,223 shares of Common Stock held by:

                    W. Vickery Stoughton
                    Thomas H. Grove
                    Philip B. Smith
                    Kevin Kimberlin and his affiliates

     3.   Amended and Restated Registration Rights Agreement by and between
Careside, Inc. and S.R. One, Limited, dated as of June 21, 1999, as it relates
to 33,564 shares of Common Stock and shares of Common Stock underlying warrants.

                                      -24-ONE WORLD ONLINE.COM, INC.,
                              a Nevada corporation

                     10% SECURED CONVERTIBLE PROMISSORY NOTE

No. ________                                                   $____________ USD

NEITHER THIS PROMISSORY NOTE NOR THE UNDERLYING COMMON SHARES HAVE BEEN
REGISTERED UNDER THE SECURITIES ACT OF 1933, OR UNDER ANY OTHER APPLICABLE STATE
SECURITIES LAWS. NEITHER THIS PROMISSORY NOTE NOR ANY COMMON SHARES ISSUED
PURSUANT TO ITS CONVERSION PROVISION MAY BE SOLD, PLEDGED, TRANSFERRED OR
ASSIGNED EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE
SECURITIES ACT AND UNDER APPLICABLE STATE SECURITIES LAWS, OR IN A TRANSACTION
WHICH IS EXEMPT FROM REGISTRATION UNDER THE PROVISIONS OF THE SECURITIES ACT AND
UNDER PROVISIONS OF APPLICABLE STATE SECURITIES LAWS.

         1. Promise to Pay. One World Online.com, Inc., a Nevada corporation
("Corporation"), for value received, hereby promises to pay to
_____________________, ("Holder"), the principal sum of ____________________
Dollars ($____________), with interest at the rate of ten percent (10%) per
annum until this Note has been paid in full or converted pursuant to the
provisions hereof.

         2. Payments. Principal shall be due and payable in a single balloon
payment on February 1, 2002 (the "Maturity Date"). Payments shall be made in
lawful money of the United States of America to Holder at the address provided
to the Corporation by the Holder, as appears on this instrument below or at such
other addresses as sent by Holder to the Corporation by certified U.S. mail at
least twenty (20) days before said payment date.

         3. Default. The occurrence of one or more of the following events shall
constitute an event of default:

                  3.1 Continued nonpayment of the interest due on this Note for
more than thirty (30) days beyond the payment date when due.

                  3.2 The nonpayment of the principal of this Note when the same
shall have become due and payable.

                  3.3 Filing by the Corporation of a petition in bankruptcy or
seeking reorganization, arrangement, adjustment, or composition of or in respect
of the Corporation's debts, whether under the United States Bankruptcy Code or
any other applicable federal or state law; entry of an order for relief under
the United States Bankruptcy Code, whether pursuant to a voluntary or
involuntary petition; the filing of an involuntary petition seeking adjudication
of the Corporation as a debtor under the United States Bankruptcy Code or
similar federal law, if said petition is not dismissed within sixty (60) days;
entry of a decree or order appointing a receiver, liquidator, assignee, or
trustee of the Corporation, or any substantial part if its property, or ordering
the winding up or liquidation of its affairs, and the continuance of any such
decree or order unstayed and in effect for a period of sixty (60) days; or the
making by it of an assignment for the benefit of creditors, or the admission by
it in writing of its inability to pay its debts generally as they become due, or
the taking of corporate action by the Corporation in furtherance of any such
action.

                  3.4 Default by the Corporation under the Master Security
Agreement, which default is not cured within ten (10) days of written notice
thereof (or within such longer cure period as allowed by the Master Security
Agreement).

         4. Acceleration. At the option of the Holder, and without demand or
notice, all principal and any unpaid interest shall become immediately due and
payable upon a default as set forth in Section 3 above.

<PAGE>

         5. Conversion Privilege. The Holder of this Note shall have the right,
at Holder's option, at any time prior to the Maturity Date, and thereafter with
the consent of the Corporation, to convert the principal and accrued, but
unpaid, interest of this Note into common shares of the Corporation ("Common
Shares"), at the rate of $3.00 U.S.D. per common share. The Holder must convert
all of the principal and accrued interest if any is converted. In order to
convert, the Holder must surrender this Note to the Corporation at the
Corporation's principal offices and the Corporation shall, as promptly as
practicable after the surrender, deliver to the Holder a certificate or
certificates representing the number of fully paid and nonassessable Common
Shares of the Corporation into which this Note may be converted. Fractional
shares shall not be issued, but the conversion price of such fractional share
will be paid in cash to the Holder. No payment or adjustment shall be made upon
any conversion with respect to any dividend on the common stock delivered upon
conversion.

         6. Call By Corporation. Provided that this Note has not been converted
pursuant to the provisions hereof, the Corporation may at its sole discretion
call this Note for payment at any time prior to the Maturity Date, by the
delivery of a notice of such call to the Holder hereof. The Holder shall have a
30-day period after the Corporation gives notice of the call to convert the
Holder's Note pursuant to Section 5 hereof. Unless so converted, the Corporation
shall pay to the Holder the principal and accrued, but unpaid, interest due as
of the expiration of Holder's conversion right (i.e., 30 days after notice of
the call has been sent to Holder), in exchange for which Holder shall deliver
this Note to the Corporation.

         7. Effect of Mergers, etc. on Conversion Privilege.

                  7.1 In case of any capital reorganization, or of any
reclassification of the common shares of the Corporation or in case of the
consolidation or merger of the Corporation with or into any other corporation or
of the sale, lease or other disposition of the properties and assets of the
Corporation as, or substantially as, an entirety to any other corporation, each
Note shall, after such capital reorganization, reclassification of common
shares, consolidation, merger or sale, lease, or other disposition, be
convertible into the kind and amount of shares or other securities or property
(including cash) to which the holder of the number of common shares deliverable
(immediately prior to the time of such capital reorganization, reclassification
of common shares, consolidation, merger, sale, lease, or other disposition) upon
conversion of such Note would have been entitled upon such capital
reorganization, reclassification of common shares, consolidation, merger, sale,
lease, or other disposition.

                  7.2 In any such event, effective provision shall be made, in
the certificate or articles of incorporation of the resulting or surviving
corporation, in any contracts of sale and conveyance, or otherwise so that, so
far as appropriate and as nearly as reasonably may be, the provisions set forth
herein for the protection of the rights of the Holder of this Note shall
thereafter be made applicable.

                  7.3 Whenever the number or kind of securities purchasable upon
conversion of this Note shall be adjusted as required by the provisions of this
Section 7, the Corporation shall forthwith file with its Secretary or Assistant
Secretary at its principal office an officer's certificate showing the adjusted
number of kind of securities purchasable upon conversion of this Note determined
as herein provided and setting forth in reasonable detail such facts as shall be
necessary to show the reason for and the manner of computing such adjustments.
Each such officer's certificate shall be made available at all reasonable times
for inspection by the Holder and the Corporation shall, forthwith after each
such adjustment, mail by certified mail a copy of such certificate to the
Holder.

                  7.4 So long as this Note shall be outstanding, if the
Corporation shall propose to take any action that would cause an adjustment to
be made pursuant to this Section 7, the Corporation shall mail by certified mail
to the Holder, at least 15 days prior to the day on which such adjustment would
become effective, a notice setting forth in reasonable detail the action to be
so taken.

         8. Corporation to Reserve Common Shares. The Corporation covenants that
it will at all times reserve and keep available, free from preemptive rights,
out of the aggregate of its authorized but unissued common shares, or its issued
common shares held in its treasury, or both, for the purpose of effecting
conversions of Notes, the full number of common shares of then deliverable upon
the conversion of all outstanding Notes not theretofore converted; and if at any
time the number of authorized but unissued common shares shall not be sufficient
to effect

<PAGE>

the conversion of all said outstanding Notes, the Corporation will take such
corporate action as may in the opinion of its counsel be necessary to increase
its authorized but unissued common shares to such number of shares as shall be
sufficient for that purpose.

         9. Restrictions on Transfer. This Note has not been registered under
the Securities Act of 1933. This Note, or any right hereunder, may not be
enforced against the Corporation by any Holder, except the original Holder
herein, and the Corporation shall not be obligated to recognize any purported
transferee or assignee, (i) unless there is an effective registration covering
the Note or underlying right under the Securities Act of 1933 and applicable
state securities laws, (ii) unless the Corporation receives an opinion of an
attorney, licensed to practice within the United States, that the transfer of
the Note, or any underlying right, complies with the requirements of the
Securities Act of 1933 and any relevant state securities law, or (iii) unless
the transfer is made pursuant to Rule 144 under the Securities Act of 1933. Any
permitted transferee or assignee shall be subject to the restrictions and to the
terms of this Note and the Master Security Agreement, and the Corporation may
require said transferee or assignee to execute and deliver such further
instruments evidencing or acknowledging the same.

         10. Rights of the Holder. The Holder shall not, by virtue hereof, be
entitled to any rights of a shareholder in the Corporation, either at law or
equity, unless and until Common Shares are issued pursuant to the conversion
provisions hereof.

         11. Notices. Any notices required or permitted hereunder shall be in
writing and shall be given by personal delivery; by deposit in the United States
mail, certified mail, return receipt requested, postage prepaid; or by
established express delivery service, freight prepaid. Notices shall be
delivered, addressed, or transmitted to the Corporation and to Holder at the
following addresses, which may be changed by a notice given to the other party
in accordance with this Section. The date notice is deemed to have been given,
received and become effective shall be the date on which the notice is
delivered, if notice is given by personal delivery, two (2) days following the
date of deposit in the mail, if the notice is sent through the United States
mail, or the date of actual receipt, if the notice is sent by express delivery
service.

                  The Corporation's address is:

                  One World Online.com, Inc.
                  Attn. Chief Executive Officer
                  4778 North 300 West, Suite 200
                  Provo, Utah 84604
                  Telephone:        801-852-3540
                  Fax:              801-852-3553

                  The Holder's address is:

                  ______________________________
                  ______________________________
                  ______________________________
                  ______________________________

         12. Miscellaneous.

                  A. This Note is one of a series of 10% Secured Convertible
Promissory Notes (the "Notes") issued by the Corporation, which Notes total an
aggregate amount of not more than Three Million Dollars (U.S.) ($3,000,000.00
USD). The obligations of the Corporation under the Notes are secured by a Master
Security Agreement, and the rights and duties of the Corporation and Holder are
subject to the terms of the Master Security Agreement. By acceptance of this
Note, Holder agrees to be bound by the terms of the Master Security Agreement.

<PAGE>

                  B. The headings of this Note are for purposes of reference
only and shall not limit or define the meaning of any provision of this Note.

                  C. If suit or action is instituted in connection with any
controversy arising out of this Note, or in the enforcement of any rights
hereunder, the prevailing party shall be entitled to recover in addition to
costs such sums as the court may adjudge as reasonable attorney's fees,
including attorney's fees incurred in any appeal.

                  D. This Note shall be governed by the laws of the State of
Utah. Any legal action to enforce or obtain an interpretation of this Note may
be filed in the Fourth Judicial District Court of Utah County, or the Third
Judicial District Court of Salt Lake County, and the parties consent to the
exercise of personal over them by said courts.

                  E. In computing any period of time pursuant to this Note, the
day of the act, event or default from which the designated period of time begins
to run shall be included, unless it is a Saturday, Sunday, or a legal holiday,
in which event the period shall begin to run on the next day which is not a
Saturday, Sunday, or legal holiday, in which event the period shall run until
the end of the next day thereafter which is not a Saturday, Sunday, or legal
holiday.

                  F. Nothing herein shall be construed to be to the benefit of
any third party, nor is it intended that any provision shall be for the benefit
of any third party.

         IN WITNESS WHEREOF, this Note is executed by One World Online.com, Inc,
to be effective as of the ____ day of _______________, 1999.

                                                   ONE WORLD ONLINE.COM, INC.,
                                                   a Nevada corporation

                                                   By___________________________
                                                      Its President

STATE OF UTAH              )
                           ss:
COUNTY OF UTAH             )

         On this ____ day of ______________, 1999, before me appeared
____________, to me personally known, who being duly sworn did say that he/she
is the President of One World Online.com, Inc., the within named corporation,
and that the instrument was signed in behalf of said corporation and
acknowledged the instrument to be the free act and deed of the corporation.

                                                   _____________________________
                                                   NOTARY PUBLIC
My Commission Expires:                             Residing at: ________________
________________________

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