A faecal occult blood test looks
at a sample of the stool (faeces) to check for blood. Occult blood means that
you cannot see it with the naked eye.
When there is blood in the stool,
it means there is likely some bleeding in the digestive tract. It may be caused
by: polyps, haemorrhoids, diverticulosis, ulcers, colitis. Blood in the stool
may also be a sign of colorectal cancer, a type of cancer that starts in the
colon or rectum.
The FOB Rapid Test Kits most
commonly involve the immunochromatographic method of detection; is intended for
the qualitative detection of faecal occult blood.
The immunochemical rapid test devices are designed to specifically detect low levels of faecal occult blood (it may be as low as 50ng/mL; hHB ≥ 50 ng/mL).
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