[A proficiency test for hair analysis in detecting drug abuse as an index of the quality of toxicologic analysis].

The Society of Hair Testing--SoHT organized a quality control test: "2004 Proficiency Test on Drugs of Abuse in Hair". 23 toxicological units participated in the test, among them the Toxicological Laboratory of The Institute of Forensic Medicine CM UJ. Five hair samples were obtained for analysis comprising four groups of drugs of abuse as follows: opioids (6-monoacethylmorphine, morphine, codeine), amphetamine (amphetamine, methamphetamine, 3,4-methylendioxyamphetamine--MDA, 3,4-methylendioxymethamphetamine--MDMA, 3,4-methylendioxyethylamphetamine--MDEA), cocaine and metabolites (benzoiloecgonine, cocaethylene) and cannabinoids (D9-tetrahydrocannabinol --9-THC, cannabinol--CBN). Obtained results were evaluated positively in all groups of drugs which were the subject of examination. Liquid chromatography coupled with tandem mass spectrometry in chemical ionization under atmospheric pressure option (LC-APCI-MS-MS) and gas chromatography coupled with tandem mass spectrometry and electron-impact ionization mode (GC-EI-MS-MS) were applied for analysis of analytes.