NHCO Phlebotomy Practice Test

FOBT stands for Fecal Occult Blood Test. Fecal means stool, occult means hidden (not visible), and blood test indicates that the test detects blood. It’s used to screen for hidden blood in stool, which can signal colorectal polyps, cancer, or other GI conditions. The other options don’t fit because they imply a different specimen (not stool), a non-existent or misnamed method (like optical detection), or a process involving fasting or oral samples.