This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
[{'content': "Hydrogen peroxide is used in all of the following chemical tests for blood, EXCEPT: \nSelect and explain. \nA. Benzedine test, B. Phenophthalein test, C. Ohotoluidine test, D. Teichmann's test", 'role': 'user'}, {'content': "Answer: D \nExplanation: Teichman's test uses Sodium chloride & glacial acetic acid; it doesn't use Hydrogen peroxide. All other test use Hydrogenperoxide, which acts as the oxidizing agent, the respective reagents produces a colored compound on coming in contact with blood stain. Ref: The Essentials of Forensic Medicine & Toxicology by K S Narayan Reddy, 27th Edition, Pages 394, 395", 'role': 'assistant'}]