melanotic stool test Ever noticed black and wondered what it means? Fecal Occult Blood Test (FOBT):
Fecal Occult Blood Test (FOBT): Uses, Procedure, Results Fecal (Stool) Tests CancerQuest The Quantity of Blood Required to Produce a Tarry Stool. How much? Melena, characterized by black tarry stools, can occur with as little as 50 cc of blood in the stomach. How What causes black stool? What does it indicate?
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