Get Virtual Care
For Businesses
About Us
A member asked:
Ok so why do i test postive for blood in my stool n sometimes test negative for blood in stool .. it weird y is this?
3 doctors weighed in across 2 answers
Not weird: You have a break in your intestinal or rectal mucosa. Some amount of blood is mixing with some amount of stool. Depending on the quantities of either/both, and the source of bleeding, you'll test positive sometimes and negative other times. That's the reason most doctors ask for at least 3 samples.
Answered 4/27/2015
4.9k views
Blood in stool.: Heme occult test is not 100% sensitive or specific. You do have false negative and false positive with this test. If you have heme occult test positive, given your age, need to at least have a flexible sigmoidoscopy, if not a colonoscopy.
Answered 9/9/2013
4.9k views
Related Questions
A member asked:
Hey can stool test come back a false negative? And if positive where can the blood come from
A doctor has provided 1 answer
A member asked:
Did 2 occult stool blood test. One positive, one negative. How likely cancer?
2 doctors weighed in across 2 answers
A member asked:
Hi, I've noticed my stools looking like they have blood in them and I've had changes in bowel habits for weeks even though test I took were negative.
A doctor has provided 1 answer
A member asked:
2 yo has black flecks in stool sometimes. He's acting & eating normal. Hemoccult test 2 months ago negative. I still worry about dry blood. Should i?
3 doctors weighed in across 2 answers
People also searched for:
Hospitalized 3 times in last 2 months with the symptoms from my last 2 posts here. Extensive blood, urine, & stool workup done. All tests neg. Still very sick. Will post all symptoms in next post.
I have black flakes or pieces on Tp after wiping, 3 or 4times a week stool looks normal and had a few negative stool test. help worried about blood
My stool has bright red throughout the inner part of it, outer edge is brown. Could it be other reasons then blood? Took occult test 1 m ago negative.
I had a negative colorgaurd test in September. Today I had what looked like a tiny bit of mucus blood on stool. Should I worry about this?
Daughter 5 had stool tested blood was detected and did stool culture test came back negative what's was the blood then and what is all tested?
Didn't find what you're looking for?
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your questionMore of what we treat
Download HealthTap
Video visit and message your doctor
