The stool guaiac test or guaiac fecal occult blood test (gFOBT) is one of several methods that detects the presence of fecal occult blood (blood invisible in the feces). The test involves placing a faecal sample on guaiac paper (containing a phenolic compound, alpha-guaiaconic acid, extracted from the wood resin of Guaiacum trees) and applying hydrogen peroxide which, in the presence of blood ...
The stool guaiac test looks for hidden (occult) blood in a stool sample. It can find blood even if you cannot see it yourself. It is the most common type of fecal occult blood test (FOBT).
Definition. The stool guaiac test looks for hidden (occult) blood in a stool sample. It can find blood even if you cannot see it yourself. It is the most common type of fecal occult blood test (FOBT).
Learn why a Guaiac Fecal Occult Blood Test is more specific to finding blood from further up the digestive tract, such as the stomach.
Things to Know About the Stool Guaiac Test. The stool guaiac test detects hidden blood in a stool sample. It is the most common type of fecal occult blood test (FOBT).
stool guaiac test listen (stool GWY-ak …) A test that checks for occult (hidden) blood in the stool. Small samples of stool are placed on special cards coated with a chemical substance called guaiac and sent to a doctor or laboratory for testing.
Hema-Chek Fecal Occult Blood Test, Blood Test Slides and Developer, Results in 30 Seconds, 2592 (Box of 100)
This is a positive stool guaiac test. The blue arrow shows the test pane. The blue color is the positive reaction from the presence of blood in the stool specimen, which is placed on the other side of the card.
Fecal occult blood (FOB) tests can detect hidden traces of blood that may be caused by tumors or polyps in the bowel. If such traces are found, an endoscopy is performed to determine whether they're caused by a tumor or pre-cancerous tissue changes.
Overview. The fecal occult blood test (FOBT) is a lab test used to check stool samples for hidden (occult) blood. Occult blood in the stool may indicate colon cancer or polyps in the colon or rectum — though not all cancers or polyps bleed.