Diagnostic device for fecal occult blood and method of use
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United States of America Patent
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Jun 8, 1982
Issued Date -
N/A
app pub date -
Oct 8, 1980
filing date -
Jan 18, 1980
priority date (Note) -
Expired
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Abstract
Diagnostic test device for fecal occult blood utilizing a test matrix such as paper impregnated with guaiac. False-positive results in the presence of peroxidases are prevented by adding to the matrix a compound that cleaves protein hydrogen bonds such as guanidine hydrochloride and a chelating agent that binds calcium and/or magnesium such as EDTA.
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