In forensic toxicology, all positive drug findings must be confirmed by a specific chemical test. The confirmation test of choice is:

Question

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Gas chromatography-mass spectrometry (GC-MS) is the confirmation test of choice in forensic toxicology as it offers superior specificity and sensitivity compared to other methods. It can identify and quantify drugs and their metabolites in complex matrices with high accuracy and precision. Ultraviolet spectrophotometry (A), infrared spectrophotometry (E), and thin-layer chromatography (D) are not specific enough for confirmation purposes, and gas chromatography (C) alone may not provide enough information to conclusively identify a drug.

In Forensic Toxicology, All Positive Drug Findings Must Be Confirmed