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Metering strip and method for lateral flow assay devices

  • US 7,618,810 B2
  • Filed: 12/14/2005
  • Issued: 11/17/2009
  • Est. Priority Date: 12/14/2005
  • Status: Expired due to Fees
First Claim
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1. A diagnostic test kit for detecting the presence of an analyte within a blood test sample, the test kit comprising a lateral flow assay device that further includes:

  • a housing, and a membrane disposed within said housing comprising a detection region and a collection region;

    a blood sample meter separate from said housing and removably insertable into said housing, said blood sample meter comprising a first end for absorption of a blood sample, a filtering section adjacent said first end that filters red blood cell components from said blood sample, and a storage section adjacent said filtering section that receives plasma or serum from said filtering section;

    an opening in said housing sized for insertion of said sample meter into said housing such that said storage section of said sample meter is disposed in fluid communication with said collection region of said membrane, wherein said meter is not inserted into said housing until after said meter has been used for absorption, filtering, and storage of the blood sample; and

    wherein, said plasma or serum is transferable from said storage section of said sample meter to said collection region of said membrane for subsequent migration to said detection region; and

    means for cutting or scoring said sample meter along said storage section so as to present a desired length of said storage section to said collection region of said membrane.

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