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Fluid conducting test strip with transport medium

  • US 5,968,836 A
  • Filed: 06/22/1995
  • Issued: 10/19/1999
  • Est. Priority Date: 05/12/1992
  • Status: Expired due to Term
First Claim
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1. A reagent strip for measuring the concentration of an analyte in a test sample, suitable for evaluation by the human eye or by mechanical viewing means, consisting essentially of:

  • a testing pad formed from an anisotropic membrane impregnated with a color-forming reagent system specific to an analyte and having a side with relatively small pores which defines a testing surface and an opposite side with relatively large pores which defines a sample receiving surface; and

    a porous sample transport medium attached to the sample receiving surface of the testing pad, said transport medium being capable of accepting a whole blood sample on a sample accepting surface and transporting a detectable portion of the sample to the sample receiving surface.

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