title: Orthotolidine test not to be used for detection of blood in gastric juice.
mesh_terms: D001560:Benzidines; D002860:Chromium Radioisotopes; D003124:Colorimetry; D004912:Erythrocytes / Q000378:metabolism; D005750:Gastric Juice / Q000032:analysis*; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis*; D006801:Humans; D009780:Occult Blood; D011934:Reagent Strips
chemical_list: D001560:Benzidines; D002860:Chromium Radioisotopes; D011934:Reagent Strips; C009501:2-tolidine