Exhibit 10.18




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AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT
    CONTINUATION PAGEContract
    No. N01-HB-87144
    Modification No. 24


Page 2 of 2 Pages   1. ARTICLE B.2.
    ESTIMATED COST AND FIXED FEE, is
    revised to read as follows:
  a.
    The estimated cost of this contract is increased by $1,923,250
    from $12,998,339 to $14,921,589.  b.
    The fixed fee for this contract is increased by $94,997 from
    $772,982 to $867,979. The fixed fee shall be paid in
    installments based on the percentage of completion of work, as
    determined by the Contracting Officer, and subject to the
    withholding provisions of the clauses ALLOWABLE COST AND
    PAYMENT and FIXED FEE referenced in the General
    Clause Listing in Part II, ARTICLE I.1. of this
    contract. Payment of fixed fee shall not be made in less than
    monthly increments.  c.
    The Governments obligation, represented by the sum of the
    estimated cost plus fixed fee is increased by $2,018,247 from
    $13,771,321 to $15,789,568.  d.
    Total funds currently available for payment and allotted to this
    contract are increased by $2,165,738 from $13,623,830 to
    $15,789,568 of which $14,921,589 represents the estimated costs,
    and of which $867,979 represents the fixed fee. For further
    provisions on funding, see the LIMITATION OF FUNDS clause
    referenced in Part II, ARTICLE I.2. Authorized
    Substitutions of Clauses.  e.
    It is estimated that the amount currently allotted will cover
    performance of the contract through April 30, 2011.  f.
    The Contracting Officer may allot additional funds to the
    contract without the concurrence of the Contractor.  g.
    Future increments to be allotted to this contract are estimated
    as follows: *NONE*  2. ARTICLE B.4.,
    ADVANCED UNDERSTANDINGS  paragraph
    a. is revised to increase the subcontract amount by $39,409 from
    $769,183 to $808,592.
  3. SECTION J.
    LIST OF ATTACHMENTS  Attachment
    3., Financial Report of Individual Project/Contract, NIH 2706,
    Page 1 is deleted in its entirety and the attached
    Page 1 is substituted thereof.




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National Institutes of HealthFinancial Report of IndividualProject/Contract






Project Task:Complete this form In accordance






Maintenance of NHLBI Biological



Contract No:







0990-0134with accompanying Instructions






Specimen Repository



N01-HB-87144



Date of Report:



0990-0131Contractor Name and Address:SeraCare Life Sciences, Inc.DBA SeraCare BioServices217 Perry ParkwayGaithersburg, Maryland 20877Reporting Period:CumulativePercentage of







IncurredExpenditure Category


Effort/Hours







Cost at



Incurred



Cumulative



Estimated



Estimated



FundedEnd of



Cost-Current



Cost to Date



Cost to



Cost at



Contract



VariancePrior



Period



(D + E)



Complete



Completion



Amount



(Over orPeriod















(F + G)



Through



Under)Funded



Actual























April 30, 2011



(I-H)A


B



C



D



E



F



G



H



I



JPrincipal InvestigatorLaboratory StaffData EntryTotal Direct Labor





































$
3,841,314Materials & Supplies





































$
1,107,670Other Direct Costs





































$
721,919Travel





































$
13,059Freezers/Freezer Equipment





































$
1,290,050Information Management Systems Subcontract





































$
808,692Subcontract-2





































$
1,000Contract Generated Revenue





































($
14,000
)Subtotal





































$
7,769,605Overhead @





































$
5,880,900G&A@





































$
1,271,064Total Costs Excluding Fixed Fee






































14,921,589Fixed Fee





































$
867,979Total Cost Plus Fixed Fee





































$
15,789,668