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Analytical devices for detection of low-quality pharmaceuticals

  • US 10,119,981 B2
  • Filed: 09/01/2016
  • Issued: 11/06/2018
  • Est. Priority Date: 08/17/2012
  • Status: Active Grant
First Claim
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1. A multilayer paper analytical device for detection of a low quality pharmaceutical product or dietary supplement, comprising:

  • one or more assay regions;

    one or more vessels each having a wall that houses one or more reagents in registry with at least one assay region for which testing for a chemical component is desired; and

    a non-chemically interfering binder agent disposed between the assay regions and vessels;

    wherein the vessels are arranged to be adjacent to the assaying regions with the binding agent providing a fluid path such that rupture of a vessel wall establishes fluid communication between the one or more reagents released by the ruptured vessel wall and the corresponding assay region along the fluid path;

    a hydrophobic material in the form of a sheet that is adjacent each vessel and that has openings that forms part of the fluid path for each vessel;

    wherein each assay region is configured to receive a sample of a suspected a low quality pharmaceutical product or dietary supplement such that, after activation of the device by rupturing of a vessel wall in registry with the assay region, the reagent wets the assaying region for reaction with the sample.

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