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A member asked:
What are the causes of false negative results in stool blood testing?
3 doctors weighed in across 2 answers
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.
Answered 7/5/2012
6.2k views
Raw meat: Blood from undercooked meat and certain foods, .
Answered 9/12/2013
4.9k views
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