<prompt> Takayam test is used for ?To know the nature of stainTo know the speciesFor blood groupingNone of the above  <response>: 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.Teichmanns haemin crystal testTakayama hemochromogen crystal testLuminal spray test : It is especially useful in old obscure blood stains 