guaiac

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guaiac

[′gwī‚ak]
(materials)
A resin obtained from the trees Guaiacum santum and G. officinale; soluble in alcohol, ether, and chloroform; used in medicine and varnish.
References in periodicals archive ?
If the guaiac test is set at a sensitive level, there are many false positives, whereas if the test is made insensitive, a great number of true positives are missed[7, 8].
Not only was the brush sampling technique (InSure, by Enterix) significantly more sensitive than the guaiac test (Hemoccult II Sensa, by Beckman Coulter Inc.
Since gastrointestinal bleeding is not uncommon in hemodialysis patients with chronic renal failure, a stool guaiac test for occult blood is recommended to test for this condition (Marcuard & Weinstock, 1988).
She has not undergone any recent surgery or hospital admissions, there are no signs of blood loss, and a guaiac test is negative.
Questions and answers: asymptomatic patient with positive stoll guaiac test results.