What is used in the examination of marijuana, cocaine, and heroin?

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Chemistry is used in the examination of marijuana, cocaine, and heroin to identify and analyze their chemical compositions. This may involve various techniques such as chromatography, mass spectrometry, and infrared spectroscopy. Serology is the analysis of bodily fluids, and would not typically be used in the examination of these substances. Criminalistics is a broader field that includes various techniques for analyzing physical evidence, but may not specifically involve the chemical analysis of drugs. Document analysis pertains to the examination of written or printed materials for forensic purposes and would not typically apply to the examination of drugs.

What Is Used in the Examination of Marijuana, Cocaine, and Heroin