About Occult Blood Fecal Test

This test, also known as a FIT or iFOBT, detects the presence of occult (hidden) blood in fecal matter.

The Occult Blood Fecal Test is a laboratory test. Your health care provider can explain what it measures and whether it is appropriate for your situation.

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How to prepare

Most lab tests require a blood or other sample. Follow any instructions given by your healthcare provider or the testing laboratory. Tell your provider about medications, supplements, or recent illnesses that might affect results.