title: False-positive "hemoccult" reaction with cimetidine.
mesh_terms: D002927:Cimetidine / Q000494:pharmacology*; D004396:Coloring Agents; D005189:False Positive Reactions; D006146:Guanidines / Q000494:pharmacology*; D006801:Humans; D007203:Indigo Carmine; D009780:Occult Blood; D013607:Tablets
chemical_list: D004396:Coloring Agents; C025129:FDC blue lake no.2; D006146:Guanidines; D013607:Tablets; D002927:Cimetidine; D007203:Indigo Carmine