Definition A stool Gram stain is a laboratory test that uses different stains to detect and identify bacteria in a stool sample. The Gram stain method is sometimes used to rapidly diagnose bacterial infections. Alternative Names Gram stain of stool; Feces Gram stain How the test is performed You will need to collect a stool sample. There are many ways to collect a sample. You can catch the stool on plastic wrap that is loosely placed over the toilet bowl and held in place by the toilet seat, and then place the sample in a clean container. (One test kit supplies a special toilet tissue that you use to collect the sample.) Do not take stool samples from the toilet bowl water, because this can cause errors. If you need to collect a sample from a child still in diapers, line the diaper with plastic wrap. Position the plastic wrap so that it keeps the stool from any urine. Mixing of urine and stool can spoil a good sample. Your health care provider will give you instructions on when and how to retu...
Stool occult blood test - flushable home test; Fecal occult blood test - flushable home test
A negative result is normal.
Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
What abnormal results mean
Abnormal results of the flushable test may indicate the following problems (which are the same as with the guaiac smear test ):
Angiodysplasia of the GI tract
or other GI (gastrointestinal) tumors
and portal hypertensive gastropathy
GI trauma or bleeding from recent GI surgery
Inflammatory bowel disease
Additional causes of a positive test, which do not indicate a problem in the ...
The stool guaiac test finds hidden (occult) blood in the stool (bowel movement), even when you cannot see the blood yourself.
It is the most common form of fecal occult blood test (FOBT) in use today.
Guaiac smear test; Fecal occult blood test - guaiac smear; Stool occult blood test - guaiac smear
How the test is performed
In the most common way of doing a stool guaiac test, a small sample of stool is placed on a paper card and a drop or two of testing solution is added. A color change is a sign of blood in the stool.
If the test is performed in an office or hospital, a doctor may collect a small amount of stool during a rectal examination.
If the test is performed at home:
You will need to collect a stool sample from three bowel movements, one right after the other.
You will then smear a small amount of stool on a card, and mail it to a laboratory for testing.
There are many ways to collect the sam...
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