occult blood test


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occult

 [ŏ-kult´]
obscure or hidden from view.
occult blood test examination by microscope or chemical test of a specimen (such as feces, urine, or gastric juice) for presence of blood that is not otherwise detectable. Feces are tested when intestinal bleeding is suspected but there is no visible evidence of blood.

occult blood test

A screening test for disorders of the gastrointestinal tract, including anemias that may be caused by gastrointestinal blood loss.
See: fecal occult blood test
References in periodicals archive ?
Choice of fecal occult blood tests for colorectal cancer screening: recommendations based on performance characteristics in population studies: a WHO (World Health Organization) and OMED (World Organization for Digestive Endoscopy) report.
Levi et al., "Cumulative evaluation of a quantitative immunochemical fecal occult blood test to determine its optimal clinical use," Cancer, vol.
When compared to colonoscopies done every ten years, high-sensitivity fecal occult blood tests performed every year showed similar benefits in detecting colorectal cancers.
Comparison between a guaiac and three immunochemical faecal occult blood tests in screening for colorectal cancer.
After applying the multivariate model and adjustment, occupation, educational level and having a high perceived level of emotional stress remain predictors of performing fecal occult blood test.
More recently, the replacement of G-FOBT by immunochemical fecal occult blood tests (FITs) has gained acceptance in the literature.
The most commonly used guaiac-based fecal occult blood tests (gFOBTs), such as Hemoccult II, have relatively low test sensitivity, meaning that a single application of the test has somewhat less than a 50% chance of detecting cancer.
The one test that doesn't require prep is a fecal occult blood test. With this test, you collect stool samples, which are tested for breakdown products of blood in stool.
Based on my age (53) and sex, my doctor recommended blood pressure screening (the nurse had already taken care of that), a blood test for cholesterol, fecal occult blood test for colon cancer, a colonoscopy (also for colon cancer), mammography for breast cancer, DEXA bone scan for osteoporosis and an EKG for....
The three main tests currently used for early detection of cancer in men are the serum prostate specific antigen (PSA) test, the fecal occult blood test (FOBT) and clinical whole body skin examination.
He had seen my colleague, who had done a faecal occult blood test. I looked through the man's file and, sure enough, the result was there and was positive.