This analytical approach assesses a person’s drug use historical past by analyzing the hair shaft. Segments of hair present a retrospective window, doubtlessly revealing substance consumption over an prolonged interval. As an illustration, a three-centimeter phase, analyzed from the foundation, can usually provide a three-month historical past of drug publicity.
Its significance lies in its potential to offer an extended detection window in comparison with urine or blood assessments, typically proving invaluable in conditions the place a complete substance use timeline is required. Traditionally, this technique has been employed in varied authorized contexts, providing a extra goal and dependable evaluation than self-reported information.
