Discussion
Precipitin Test is performed to determine
Answer: A
The precipitin test is performed to determine the species of origin, option (A), of a blood stain or other protein material. An anti-serum made in a rabbit against human protein is layered with the extract of the stain, and a white ring of precipitate forms where the antigen and antibody meet if the stain is human. The test does not show the sex or the age of the person, so (B), (C) and (D) are wrong.
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