<prompt> All are tests for detecting carbon monoxide in blood except?Kastle mayer testTannic acid testSpectrophotometryHoppe-seylers test  <response>: Ans. is a i.e., Kastle mayer testSpectroscopic examination, Hoppe - Seylers test 10 NaOH, kunkels tannic acid test and adding water 15 ml in 2 drops of blood can detect CO. 