Test pad for detecting occult blood
AssigneeHelena Laboratories Corporation
InventorPhilip A. Guadagno
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Abstract
A test pad having a water activated reagent and a water activated peroxygen compound which undergo a chromogen reaction in an aqueous solution including hemoglobin. The reagent is potassium guaiacolsulfonate, a guaiac substitute material. The peroxygen compound is a monopersulfonate compound comprised of two moles of potassium monopersulfonate, one mole of potassium hydrogen sulfate and one mole of potassium sulfate. The test pad features a test area containing the above materials in powdered form and may also include controls for checking the results of the test. A method for using the test pad is also disclosed.
Claims6
A test kit for detecting the existence of blood in an aqueous solution comprising:
- first and second layers secured together to form a pad;
- a solid water soluble guaiacolsulfonate confined to at least one test location formed between the first and second layers;
- and
- a solid water soluble monopersulfate compound comprised of two moles of potassium monopersulfate, one mole of potassium hydrogen sulfate and one mole of potassium sulfate, said monopersulfate compound mixed with said guaiacolsulfonate at said test location, whereby any blood in the aqueous solution catalyzes the reduction of said monopersulfate compound with subsequent oxidation of the guaiacolsulfonate causing the latter to undergo a chromogen reaction.
Dependencies are inferred from the claim text.