title: Performance evaluation of Wisconsin laboratories performing implied consent alcohol determinations.
abstract: Hospital, clinic, and public health laboratories are licensed to perform implied consent blood and urine alcohol determination. Methods include enzymatic, gas chromatographic, and distillation. The techniques of evaluation/certification are outlined. The performance exhibited no consistent bias toward high or low values. The distribution of participants' values, i.e. precision, indicated a 3% coefficient of variation performance. Laboratories showed an increase in quality of performance with time, especially after the initial 6 month period. Quality of results varied in the order: gas chromatographic, enzymatic, and distillation methods.
mesh_terms: D000431:Ethanol / Q000032:analysis* / Q000097:blood / Q000652:urine; D005069:Evaluation Studies as Topic; D006801:Humans; D007753:Laboratories / Q000592:standards*; D008722:Methods; D014922:Wisconsin
chemical_list: D000431:Ethanol