Presence of occult fecal blood in stool is often used as an indicator of peptic ulcers or colorectal cancer, depending on what other signs/symptoms are present.
It's important to note that a POSITIVE test for occult blood does NOT automatically mean cancer. It is simply a sign that needs further investigation, usually by an colonoscopy, sigmoidoscopy or endoscopy to establish the root cause.
Yes "Negative" is the reference range for occult blood
mi bebe de 20 meses tiene el stool occult blood by imm positivo es peligroso eso
yes
to occult blood in the stool
yes
One may be referring to an heme-occult stool test - a test whereby one determines whether there is blood in the stool or not.
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When testing stool for occult blood, if the stool is hematest positive, it indicates occult blood. Note that a false-positive finding may occur if the person has ingested significant amounts of red meat within 3 days of the test.
At home, after having a bowel movement, the patient is asked to swipe a sample of stool obtained with a small stick on a card. After three such specimens are on the card, the card is then easily chemically tested for occult blood also.
There's no range in guaiac testing. The choices of results are negative or positive.
A fecal occult blood test would typically be used to detect the presence of blood in the stool, including melena. This test checks for hidden blood in the stool that is not visible to the naked eye, and can help identify gastrointestinal bleeding.
The stool analysis mentioned here is known as a fecal occult blood test, or FOBT, and, while it can be helpful, it is not 100% accurate--only about 50% of cancers are FOBT-positive.