Standard Practices for Proficiency Testing for Forensic Toxicology Laboratories and Breath Alcohol Programs

This document defines the minimum scope, requirements, and frequency for proficiency testing for laboratories engaged in the following sub-disciplines: postmortem forensic toxicology, human performance toxicology (e.g., drug-facilitated crimes, driving-under-the-influence of alcohol or drugs, breath alcohol program), and general forensic toxicology (non-lethal poisonings or intoxications). This document is not intended to cover employment drug testing or court ordered toxicology (e.g., probation and parole, drug courts, child services).