<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 o It is a microchemical test to know the nature of stain.Microchemical tests: These tests are based on property of haem part of hemoglobin to form characteristic coloured crystals.1 Teichmanns haemin crystal test2 Takayama hemochromogen crystal test3 Luminal spray test: It is especially useful in old obscure blood stains 