4 doctors weighed in:

Is the stool test "positive" when there is only a small speck of blue-green color on the test area?

4 doctors weighed in
Dr. Charles Cattano
Internal Medicine - Gastroenterology
3 doctors agree

In brief: Guaiac test +

Guaiac (leuco-dye) testing has been available for >100 years--the colorless dye turns blue or green in presence of adequate amounts of peroxidase-like substances (e.
g. Hemoglobin) & hydrogen peroxide. Ingested iron, certain fruits & vegetables, some drugs, toilet bowel sanitizers give false-positive reactions. Method of collection & underlying pathology may account for your + finding--see doctor.

In brief: Guaiac test +

Guaiac (leuco-dye) testing has been available for >100 years--the colorless dye turns blue or green in presence of adequate amounts of peroxidase-like substances (e.
g. Hemoglobin) & hydrogen peroxide. Ingested iron, certain fruits & vegetables, some drugs, toilet bowel sanitizers give false-positive reactions. Method of collection & underlying pathology may account for your + finding--see doctor.
Dr. Charles Cattano
Dr. Charles Cattano
Thank
Dr. Arthur Heller
Internal Medicine - Gastroenterology

In brief: Yes, minimally so

Yes, but may be equivocal.
Depends on the circumstance, diet, etc. Worth repeating. If patient is at risk for colon polyps or cancer, by age, family history, or symptoms/physical exam, then the stool test is not the make or break issue in deciding to do further evaluation. If there are other GI symptoms, the decision for evaluation depends on histroy and physical.

In brief: Yes, minimally so

Yes, but may be equivocal.
Depends on the circumstance, diet, etc. Worth repeating. If patient is at risk for colon polyps or cancer, by age, family history, or symptoms/physical exam, then the stool test is not the make or break issue in deciding to do further evaluation. If there are other GI symptoms, the decision for evaluation depends on histroy and physical.
Dr. Arthur Heller
Dr. Arthur Heller
Thank
Get help from a real doctor now
Dr. Keegan Duchicela
Board Certified,
11 years in practice
16M people helped
Continue
108,000 doctors available
Read more answers from doctors