Fecal occult blood test
OwnerPaul J. Lawrenceinventor
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Abstract
Fecal occult blood tests of enhanced sensitivity and specificity are provided by employing (1) a developer composition comprising a solution of a hydroperoxide in a solvent comprising at least about 50% by volume of a solvent for iron protoporphyrins such as dimethyl sulfoxide and/or (2) a solid test matrix comprising a solid support impregnated with a leuco dye and a hemoprotein solubilizing agent. Test results may be further improved by incorporating plant peroxidase inhibitors, iron/copper chelating agents and buffers in the developer and/or test matrix.
Claims13
In a fecal occult blood test wherein a fecal specimen is placed on a solid test matrix having a leuco dye impregnated therein and a hydroperoxide developer solution is subsequently placed on the matrix, the improvement comprising applying as the hydroperoxide developer solution a solution whose solvent comprises at least 50% by volume of dimethyl sulfoxide.
Dependencies are inferred from the claim text.