Get Virtual Care
For Businesses
About Us
A member asked:
What is the principle behind the occult blood test?
3 doctors weighed in across 2 answers
More than one: Guaiac test measures peroxidase activity which is associated with blood from any site in the GI tract, including blood in meats, and peroxidase in horse raddish. A different test measure human globin part of hemoglobin and detects only blood originating in the large intestine.
Answered 6/10/2014
5.9k views
FIT or hemoccult?: If you're using the old hemoccult slide, you'll notice its two-sided. Place your specimen on one side, close the lid. Doctor or lab, when developing your specimen, turns the card over, opens the back & applies the developer solution which soaks thru to your specimen. A color change indicates your specimen contains invisible blood. Principle & mechanics differ with FIT (fecal immunochemical test).
Answered 10/31/2014
3.7k views
Related Questions
A member asked:
What will a occult blood result of 1+ mean on a urinalysis lab test?
A doctor has provided 1 answer
A member asked:
Please prescribe Cologuard test. I have had 2 clean colonoscopies 6 and 11 years ago. But occult blood recently.
4 doctors weighed in across 2 answers
A member asked:
28 yo male, very tiny specks of blood on TP during last wipe. No anemia, negative occult test. What are the possible causes?
A doctor has provided 1 answer
A member asked:
So if last year I had negative occult blood test but a year later have positive blood occult test, is it possible something was miss last year?
A doctor has provided 1 answer
A member asked:
Probably warts on my bf behind. Small in size without blood or odor Do I have to worry? Blood test for me?? What to do to see if I'm ok or not? Help!
A doctor has provided 1 answer
People also searched for:
Faecal occult blood test positive danger?
How are fecal occult blood tests performed?
Gastroenterologist - is it true that occult blood tests between colonoscopies is not recommended?
My occult fecal blood fit test came back positive, what does tis mean?
Eating tomato can cause occult blood test positive?
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
