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Specimen test slide and method for testing occult blood

  • US 4,365,970 A
  • Filed: 05/01/1981
  • Issued: 12/28/1982
  • Est. Priority Date: 05/01/1981
  • Status: Expired due to Term
First Claim
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1. In an occult blood specimen test slide having a front panel, a rear panel, said front panel having one or more openings, sheet means carrying a test reagent between the front and rear panels underlying each of said openings, a hinged cover adapted to overlie a portion of the front panel and said openings and flap means in the rear panel opposite said openings and pivotable to expose the underside of the sheet, the improvement comprising:

  • an area positioned on a portion of the sheet means facing the rear panel and isolated from the openings in the front panel, said area including a positive and negative monitor, said positive and negative monitors including the test reagent and said positive monitor additionally including a compound that reacts to environmental conditions in a manner similar to hemoglobin.

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