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
Takayam test is used for ? 
Select and explain. 
A. To know the nature of stain, B. To know the species, C. For blood grouping, D. None of the above
A: To know the nature of stain
Answer: A: To know the nature of stain 
Explanation: Ans. is 'a' i.e., To know the nature of stain It is a microchemical test to know the nature of stain.Microchemical tests :These tests are based on propey of haem pa of hemoglobin to form characteristic coloured crystals.Teichmann's haemin crystal testTakayama hemochromogen crystal testLuminal spray test : It is especially useful in old obscure blood stains