Document:

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                                                                   Exhibit 10.7

          The securities represented hereby have not been registered
     under the Securities Act of 1933, as amended, or any state
     securities laws and neither the securities nor any interest
     therein may be offered, sold, transferred, pledged or otherwise
     disposed of except pursuant to an effective registration
     statement under such Act and such laws or an exemption from
     registration under such Act and such laws which, in the opinion of
     counsel for the holder, which counsel and opinion are reasonably
     satisfactory to counsel for this corporation, is available.

                                     NOTE

$200,000.00                                            February 16, 2001

     For value received, the undersigned, SERACARE, INC., a Delaware
corporation having an address at 1925 Century Park East, Suite 1970, Los
Angeles, Ca 90067 (the "BORROWER"), hereby promises to pay to the order of
Samuel A. and Mary Ann Anderson Trust, 63 Beacon Bay, Newport Beach, CA 92660
(the "PAYEE"), the principal sum of Two Hundred Thousand Dollars
($200,000.00), on March 30, 2001, together with all accrued interest through
and including the date of payment (the "INITIAL MATURITY DATE"). At the
option of the borrower, the Maturity Date may be extended through and until
June 14, 2001 (the "FINAL MATURITY DATE"), Interest shall be payable at a
rate per annum (computed for actual days elapsed on the basis of a 365-day
year) of twelve percent (12.0%). The Borrower may prepay this Note at any
time prior to the due date hereof, in full, without premium or penalty.

     Payments of both principal and interest on this Note are to be made at
63 Beacon Bay, Newport Beach, CA 92660, or such other place as the holder
hereof shall designate to the Borrower in writing, in lawful money of the
United States of America in immediately available funds.

     The Borrower shall pay reasonable costs and expenses of collection,
including, without limitation, reasonable attorney's fees and disbursements
in the event that any action, suit or proceeding is brought by the holder
hereof to collect this Note and either the holder obtains a judgment in its
favor that is not appealed from or is upheld on appeal, or such action, suite
or proceeding is settled with any sum due and owing to the holder as a result
of such settlement.

     THIS NOTE SHALL BE GOVERNED BY, AND CONSTRUED AND ENFORCED IN ACCORDANCE
WITH, THE LAWS OF THE STATE OF CALIFORNIA WITHOUT REGARD TO ITS RULES
PERTAINING TO CONFLICT OF LAWS.

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     THE BORROWER IRREVOCABLY CONSENTS THAT ANY LEGAL ACTION OR PROCEEDING
AGAINST IT UNDER, ARISING OUT OF OR IN ANY MANNER RELATING TO THIS NOTE MAY
BE BROUGHT IN ANY COURT OF THE STATE OF NEW YORK, COUNTY OF NEW YORK, OR IN
THE UNITED STATES DISTRICT COURT FOR THE STATE OF NEW YORK OR IN THE STATE OF
CALIFORNIA, OR IN THE UNITED STATES DISTRICT COURT FOR THE STATE OF
CALIFORNIA. THE BORROWER, BY THE EXECUTION AND DELIVERY OF THIS NOTE,
EXPRESSLY AND IRREVOCABLY ASSENTS AND SUBMITS TO THE PERSONAL JURISDICTION
OF ANY OF SUCH COURT IN ANY SUCH ACTION OR PROCEEDING. BY ITS ACCEPTANCE OF
THIS NOTE BY THE HOLDER AND BY THE EXECUTION HEREOF BY THE BORROWER, EACH
AGREES THAT ANY AND ALL LEGAL ACTION RELATING TO THIS NOTE SHALL BE BROUGHT,
AND MAINTAINED, ONLY IN SUCH COURTS. THE BORROWER FURTHER IRREVOCABLY
CONSENTS TO THE SERVICE OF ANY COMPLAINT, SUMMONS, NOTICE OR OTHER PROCESS
RELATING TO ANY SUCH ACTION OR PROCEEDING BY DELIVERY THEREOF TO IT AT THE
ADDRESS SET FORTH ABOVE OR SUCH OTHER ADDRESS AS THE BORROWER SHALL HAVE
THERETOFORE NOTIFIED THE HOLDER HEREOF IN WRITING OR IN ANY OTHER MANNER
PERMITTED BY LAW. IN THE EVENT SERVICE ON THE BORROWER IS EFFECTED AS SET
FORTH IN THE PRECEDING SENTENCE, THE BORROWER HEREBY EXPRESSLY AND
IRREVOCABLY WAIVES ANY CLAIM OR DEFENSE IN ANY SUCH ACTION OR PROCEEDING
BASED ON ANY ALLEGED LACK OF PERSONAL JURISDICTION, IMPROPER VENUE, FORUM NON
CONVENIENS, OR ANY SIMILAR BASIS.

                                       SERACARE, INC.

                                        By: /s/ JERRY L. BURDICK
                                           --------------------------<PAGE>

                                                                   Exhibit 10.8

                                PROMISSORY NOTE

$100,000.00                                             Los Angeles, California
                                                              November 10, 2000

     1.  PRINCIPAL.  FOR VALUE RECEIVED, the undersigned, SeraCare, Inc., a
Delaware corporation ("Maker"), hereby promises to pay to Samuel A. and Mary Ann
Anderson Trust ("Holder"), or his/her/its order or successors or assigns, at
SeraCare, Inc., 1925 Century Park East, Suite 1970, Los Angeles, California
90067, or at such other place as Holder may from time to time designate, in
lawful money of the United States of America, the principal sum of One
Hundred Thousand dollars ($100,000.00) (the "Principal Sum"), together with
interest on the unpaid balance accrued from the date first written above at a
rate equal to ten percent (10%) per annum, with a minimum interest charge of
$1,000.00, all in accordance with the terms of this Promissory Note (the
"Note").

     2.  In consideration for the loan the Company shall issue to the Bridge
Lender an aggregate of 25,000 warrants to purchase common stock of the
Company (the "WARRANTS"). Each Warrant shall permit the holder to purchase
shares of the Company at an initial purchase price of $3.125 per share and
shall be exercisable for five years. Such Warrants shall contain standard
cashless exercise provisions and shall be in the form attached hereto.

     3.  PAYMENT.  Unless sooner accelerated pursuant to the terms of this
Note, interest accrued on the Principal Sum shall become due and payable on
December 10, 2000.

     4.  PREPAYMENT. Maker may, at any time and from time to time, without
penalty, make prepayments on the Principal Sum.

     5.  EVENT OF DEFAULT. As used herein, an "Event of Default" shall be
defined as the failure of Maker to make any payment of principal or interest
when due under the terms of this Note, such failure continuing for a period of
thirty (30) calendar days after the due date without being cured. Upon the
occurrence of an Event of Default, the unpaid principal balance of this Note
and all interest accrued thereon may, at Holder's option, at any time
thereafter be accelerated and be declared to be immediately due and payable.

     6.  INTEREST RATE LIMITATION.  It is the intent of Maker and Holder that
none of the terms and provisions contained herein shall be construed to
create a contract for use, forbearance or detention of money requiring the
payment of interest at a rate in excess of the maximum interest rate
permitted by applicable law. If any Holder of this Note shall collect monies
which are deemed to constitute interest which would otherwise increase the
effective interest rate of this Note to a rate in excess of the maximum rate
permitted to be charged by

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applicable law, all such sums deemed to constitute interest in excess of such
maximum rate shall, at the option of Holder, be credited to the payment of
the sums due hereunder or returned to Maker.

     7.  SECURITY.  This Note shall be secured by all of the assets, tangible
and intangible, of Maker set forth on Exhibit A hereto.

     8.  WAIVER.  No delay or omission on the part of Holder hereof in
exercising any right under this Note shall operate as a waiver of such right.
Moreover, a waiver of any term or condition contained under this Note by
Holder must be in writing to be effective and shall not be construed as a
waiver of any subsequent breach or failure of the same term or condition or
of any other term or condition contained in this Note.

     9.  AMENDMENTS.  Neither this Note nor any provision hereof may be
changed, waived, discharged or terminated orally, but only by an instrument
in writing signed by the party against whom enforcement of the change,
waiver, discharge or termination is sought.

     10. SUCCESSORS.  This Note shall be binding upon and inure to the
benefit of the parties hereto and their respective successors and permitted
assigns. Maker may not assign or transfer all or any part of its rights or
obligations hereunder.

     11. COSTS OF COLLECTION.  Maker promises to pay all costs and expenses,
including reasonable attorneys' fees, incurred in connection with the
collection and enforcement of this Note. Maker hereby waives diligence,
presentment, protest, demand and notice of every kind, to the fullest extent
permitted by law, and the right to plead any statute of limitations as a
defense to any demand hereunder.

     12. GOVERNING LAW.  This Note shall be governed by, and construed and
enforced in accordance with, the laws of the State of California, without
regard to conflicts of laws principles.

     13. DRAFTING.  Maker hereby waives the benefit of any statute or rule of
law or judicial decision, which would otherwise require that the provisions of
this Note be construed or interpreted most strongly against the party
responsible for the drafting thereof.

     14. SEVERABILITY.  If any provision of this Note is held to be
unenforceable for any reason, it shall be adjusted rather than voided, if
possible, to achieve the intent of the parties to the extent possible. In any
event, if any term of this Note, or the application thereof to any person,
entity or circumstance, shall, to any extent, be invalid or unenforceable,
the remainder of this Note, or the application of such term to persons,
entities or circumstances other than those as to which it is invalid or
unenforceable, shall not be affected thereby, and each term of this Note
shall be valid and enforceable to the fullest extent permitted by law.

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     15. HEADINGS.  Headings at the beginning of each numbered paragraph of
this Note are intended solely for convenience and are not to be deemed or
construed to be part of this Note.

     16. ENTIRE AGREEMENT.  This Note sets forth the entire agreement and
understanding of the parties with respect to the subject matter hereof and
supersedes all prior agreements, arrangements and understandings with respect
to the subject matter hereof. No representation, promise, oral or written
agreement, understanding, inducement or statement of intention has been made
by Maker or Holder with respect to this Note which is not embodied in this
Note. Neither Maker nor Holder shall be bound by or liable for any alleged
representation, promise, oral or written agreement, understanding, inducement
or statement of intention with respect to this Note not so set forth.

     IN WITNESS WHEREOF, the undersigned has executed this Note as of the day
and year first written above.

                                      MAKER:

                                      SERACARE, INC.,
                                      AN DELAWARE CORPORATION

                                           /s/ JERRY L. BURDICK
                                      --------------------------------
                                      BY:    JERRY L. BURDICK
                                      TITLE: EXECUTIVE VICE PRESIDENT

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                             LIST OF OMITTED EXHIBITS

The following Exhibit to the Secured Promissory Note between SeraCare, Inc.
("Maker") and Samuel A. and Mary Ann Anderson Trust ("Holder") in the amount
of $100,000, dated November 10, 2000, has been omitted from this Exhibit and
shall be furnished supplementally to the Commission upon request:

Exhibit A      Secured Assets

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