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Dual path immunoassay device

  • US 9,784,734 B2
  • Filed: 11/04/2014
  • Issued: 10/10/2017
  • Est. Priority Date: 03/11/2005
  • Status: Active Grant
First Claim
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1. A test device for use with a solution and for determining the presence of a ligand in a liquid sample, the test device comprising:

  • a first sorbent strip having a first end defining a solution receiving portion that receives the solution, and having a test site displaced from said first end, said test site having an immobilized ligand-binding mechanism thereon; and

    a second sorbent strip perpendicular to said first sorbent strip, said second sorbent strip having a first end defining a sample receiving portion that receives the liquid sample, and a portion displaced from said first end of said second sorbent strip and touching said first sorbent strip at or adjacent said test site such that the liquid sample applied to said first end of said second sorbent strip laterally migrates over time to said first sorbent strip and does not immediately wet said first sorbent strip.

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