guaiac test


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guaiac

 [gwi´ak]
a resin from certain Caribbean trees, used as a reagent.
guaiac test one for occult blood; glacial acetic acid and guaiac are mixed with the specimen; on addition of hydrogen peroxide, the presence of blood is indicated by a blue tint.

guai·ac test

an obsolete test using glacial acetic acid, gum guaiac solution or hydrogen peroxide to detect traces of fecal or occult blood.

guai·ac test

(gwī'ak test)
A screening procedure for occult blood in stool.

Almén,

August Teodor, Swedish physiologist, 1833-1903.
Almén test for blood - a test for occult blood. Synonym(s): guaiac test; Schönbein test; van Deen test
References in periodicals archive ?
At least one of the six guaiac test samples (Fecatwin-S) was positive in 72.8% (381/523) of patients and at least one of the six (FECA-EIA) absorbance values was over 0 in 38.8% (214/523) of patients.
Immunoassays, unlike guaiac tests, are not influenced by diet or medication use, and they are associated with fewer false-negative and false-positive findings, Dr.
Immunoassays, unlike guaiac tests, are not influenced by diet or by medication use, and they are associated with fewer false-negative and false-positive findings, Dr.