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Effect of iron on the guaiac reaction
Gastroenterology, 1989Most studies show that oral ingestion of iron does not cause a positive stool guaiac reaction. However, all in vitro studies show that iron does cause a positive guaiac reaction and some in vivo studies have shown a positive stool guaiac reaction in response to oral iron. This study examines this unresolved question.
W M, McDonnell +3 more
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Gastroenterology, 2008 Contains fulltext : 71251.pdf (Publisher’s version ) (Closed access)BACKGROUND & AIMS: Despite poor performance, guaiac-based fecal occult blood tests (G-FOBT) are most frequently implemented for colorectal cancer screening ...
Martijn G Van Oijen +2 more
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Evaluation of the Guaiac-Positive Patient
2009One of the more common encounters a physician must deal with is the presence of occult gastrointestinal blood loss. The prevalence may reach up to 1 in 20 adults. The detection of occult blood is important because a person may lose up to 150 ml of blood from the proximal gastrointestinal tract before producing overt melena [Schiff et al.
Rebecca Burbridge, Melissa Teitelman
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New England Journal of Medicine, 1952
AN EVALUATION of the importance of routine stool testing in the internist's office for occult blood was made by reviewing 1600 consecutive office records of new patients.
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AN EVALUATION of the importance of routine stool testing in the internist's office for occult blood was made by reviewing 1600 consecutive office records of new patients.
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Errors in the Guaiac Test For Occult Blood
JAMA: The Journal of the American Medical Association, 1967To the Editor:— During a lecture and clinical demonstration, I performed a guaiac test for occult blood on a stool specimen that appeared tarry, and obtained a negative reaction. In order to illustrate how a positive reaction should appear, I repeated the test with a specimen containing fresh blood.
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Sensitivity of Guaiac-Impregnated Cards for the Detection of Colorectal Neoplasi
Journal of Clinical Gastroenterology, 1983The sensitivity of the guaiac-impregnated card, hemoccult II, for the detection of colorectal neoplasia was tested in 213 patients undergoing elective colonoscopy over a 10-month period. Contrary to statements in standard texts as to the high sensitivity of guaiac-impregnated cards for the detection of these tumors, our results demonstrate only a 52 ...
M L, Crowley +7 more
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Guaiac Testing in the Diagnosis of Rectal Trauma
The Journal of Trauma: Injury, Infection, and Critical Care, 1992Rectal examination with guaiac testing is a standard part of the emergency department evaluation of acutely traumatized patients. Its major role is in the recognition of occult bowel injury. We questioned its efficacy in detecting occult rectal injury in patients with penetrating trauma.
H, Levine +4 more
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