Benzodiazepine analysis using ultra-high-performance liquid chromatography with tandem mass spectrometry (LC-MS/MS) is a precise laboratory procedure aimed at measuring benzodiazepine levels in biological samples such as blood or urine. This analysis is based on an advanced technique that combines chromatography to separate compounds and mass spectrometry to analyze them, providing rapid and reliable results. This test is used to assess drug exposure, guide treatment plans, and monitor illicit use.