LAUSR

Amphetamines in hair were investigated with thousands of workplace testing head and body hair samples collected and analyzed over ten years and tabulated by year. All samples were washed by a published extensive method prior to confirmation by LC-MS/MS. Presented are concentrations of parent (methamphetamine (METH), 3,4-methylenedioxy-methamphetamine (MDMA), and methylenedioxy-amphetamine (MDA) as metabolite and amphetamine (AMP) as metabolite and without presence of parent drug. Some differences in METH concentrations from year-to-year were significant, and some ratios of metabolite to parent drug for both METH and MDMA also varied significantly. While rates of METH use may not have changed significantly, some aspects of the drugs ingested as demonstrated by hair analysis varied over the ten-year period.