Is a false positive result in stool blood testing possible?

Certainly. If you take an iron supplement, it will turn a stool test positive, as that is what the stool test is for.
Yes. Occult blood tests based on testing for peroxidase activity generate false positives from eating meat, horse radish and iron intake.

Related Questions

What are the causes of false negative results in stool blood testing?

Bogus Testing. To be falsely negative would imply the presence of blood that has been missed. Such an event commonly occurs with either a defective card, expired solution or poor sample. Try using a different card and solution. If there is a high suspicion of blood based on appearance or risk factors, a stool cell count can be done, a reagent test dropped into toilet water after defecating or fecal dna test. Read more...

What is the ez detect stool blood testing kit?

Limited usefulness. This is a home kit to detect blood in stool. However, except for its convenience there is no advantage as it is a lesser sensitive assay compared to current state of art technology "fecal immunochemical testing" for blood. I am aware of only limited comparative data and it is not very supportive of ezd being comparable to clinical testing. Read more...
Colon cancer screen. Tests for blood in the stool which can indicate a problem such as polyps or colon cancer. Read more...

What could cause a positive iFOBT (stool blood) test in a young 23 yr old male? And is it serious? Doc referred me to GI

Many things! I'm assuming your doc ordered the test for a symptom, or anemia work up. If so, could be stomach ulcer, ulcer anywhere along gut, to bleeding diverticula in colon or even a hemmoroid. Also, vitamin with iron, nosebleed (because swallowed blood) or anything where blood gets into GI tract. Older tests would also turn positive if you had eaten red meat or spinach due to iron. Hope that helps! Read more...
True or false +'s... ...are possible. Whether blood is ingested, or originates in your gut, an occult blood test may be positive. Consider stopping any aspirin or NSAID use now (unless prescribed), and keep your GI appointment please. Read more...