STOOL TEST (FOR OCCULT BLOOD)
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What is Stool for Occult Blood?
The stool test for occult blood ascertains the presence of blood which is not obvious to the naked eye. Occult blood means the hidden blood which cannot be seen. Occult blood in the stool can show bleeding in the gastrointestinal tract which can be due to asymptomatic ulcerated lesions of the GI tract, polyps, hemorrhoids, diverticulosis, Ulcers, and Colitis (a type of inflammatory bowel disease). The presence of blood in the sample may additionally be a signal of colorectal cancer. A stool for occult blood check can be used as a screening test for early diagnosis of colorectal cancer. It can additionally assist in diagnosing the most efficient treatment which may be used.
Why is Stool for Occult Blood done?
To diagnose for digestive tract bleeding, which may as well be an indicator of colon cancer, asymptomatic ulcerated lesions of the GI tract, polyps, hemorrhoids, diverticulosis, and Colitis (a type of inflammatory bowel disease)?, To assess unforeseen anemia.
What does Stool For Occult Blood Measure?
Invisible blood (occult blood in stool) can be a screening test of carcinoma colon (a type of cancer) and can assist in early prognosis and management. Most cases of colon cancer start with benign intestinal polyps which are pretty common in people over the age of 50. Mostly, these polyps might also not cause any health problems, but some can emerge as cancerous. They can be fragile and may as well bleed on occasion when fecal mass brushes against them. This can be identified with the aid of a fecal or stool occult blood test. This small amount of blood might also be the first and from time to time the solely sign of early coloncancers thereby making a stool for occult blood an important screening tool for colorectal (colon and rectal) cancer.
It is recommended that at least three stool samples need to be collected on separate days. The American Cancer Society has mentioned that a single check carried out at the time of a digital rectal examination in a doctor’s office is not recommended due to the fact the sample cannot be sufficiently sensitive to screen for cancer. The domestic FOBT or FIT is recommended because the gathering of stools on three separate days increases the chance of identifying cancer. Furthermore, it is recommended that those who pick this method of coloncancers screening get screened each year.
Interpreting Stool for Occult Blood results
Normal result: Negative result (outcome) means occult blood does not exist in the stool.
Positive stool occult blood test means that there is bleeding somewhere in your digestive tract asymptomatic ulcerated lesions of the GI tract, polyps, hemorrhoids, diverticulosis, Colitis, and colorectal cancer. If stool for occult blood is positive, then another test may be necessary such as colonoscopy in order to discover the genuine place and purpose of your bleeding.
FREQUENTLY ASKED QUESTIONS (FAQs)
Q. How is stool test for occult blood performed?
The means of collection and testing relies on the test technique used and can differ from laboratory to laboratory. For the guaiac-based test, the laboratory will offer three test cards. Separate stool samples are collected on three consecutive days and for every test, a stool sample should be gathered into a neat container and should not be affected with urine or water. A test card is labeled with the person's name and the date. A slight smear of stool is put onto a distinctive location on the card and allowed to dry. Once it is dry, it is stable for some weeks at room temperature. When all the consecutive samples have been collected and dried, the test cards are taken back to the doctor or laboratory. With the fecal immunochemical examinations (FIT), a frequent method is to use a unique long-handled brush or any other system in order to gather a sample from the surface of a stool sample. The brush is then used to transfer the sample to a specific collection card. After the card is allowed to dry, it is taken back to the laboratory for more analyses.
Q. Why is more than one stool sample needed?
Bleeding, especially from polyps and tumors, is periodical. Therefore, blood isnot generally disbursed in all stool samples. This means a specific or an exact interpretation of result from a single test cannot be made. Hence, taking three separate samples on three separate days can raise the chances of identifying occult bleeding.
The information provided herein is for patient general knowledge only and should not be used during any medical emergency, for the diagnosis or treatment of any medical condition. Duplication for personal and commercial use must be authorized in writing by Surjen.com.
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