Oral cimetidine does not cause false-positive test for blood in stool.
D000284:Administration, Oral; D002927:Cimetidine / Q000008:administration & dosage*; D005189:False Positive Reactions; D006146:Guanidines / Q000008:administration & dosage*; D006801:Humans; D009780:Occult Blood
D006146:Guanidines; D002927:Cimetidine