Section 109(2) in The Karnataka Prohibition Act, 1961
(2)The registered medical practitioner before whom such person has been produced shall examine such person and collect and forward in the manner prescribed the blood of such person, and furnish to the officer by whom such person has been produced, a certificate in the prescribed form containing the result of his examination. The Chemical Examiner or the Assistant Chemical Examiner to Government, or other officer appointed under sub-section (1), shall certify the result of the test of the blood forwarded to him, stating therein, in the prescribed form, the percentage of alcohol, and such other particulars as may be necessary or relevant.