This analytical method assesses a person’s drug use historical past by inspecting the hair shaft. Segments of hair present a retrospective window, probably revealing substance consumption over an prolonged interval. As an illustration, a three-centimeter section, analyzed from the foundation, can sometimes provide a three-month historical past of drug publicity.
Its significance lies in its skill to supply 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 methodology has been employed in numerous authorized contexts, providing a extra goal and dependable evaluation than self-reported information.
