guaiac test

(redirected from Almen test for blood)

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.

guaiac test

a test, using guaiac as a reagent, formerly performed on feces and urine for detecting occult blood in the intestinal and urinary tracts.

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

guaiac test

a tree resin from Guajaaem officinale; used in a test for occult blood in the feces.