TY - GEN AU - Ventura,M AU - Pichini,S AU - Pujadas,M AU - Ventura,R AU - Di Giovannandrea,R AU - Zuccaro,P AU - Pacifici,R AU - Langohr,K AU - Jurado,C AU - de la Torre,R TI - Four years' experience in external proficiency testing programs for hair testing of drugs of abuse in Italy (HAIRVEQ) and comparison with the Society of Hair Testing program in 2005 SN - 0163-4356 PY - 2007///0730 KW - 3,4-Methylenedioxyamphetamine KW - analysis KW - Clinical Laboratory Techniques KW - standards KW - Cocaine KW - analogs & derivatives KW - Codeine KW - False Negative Reactions KW - False Positive Reactions KW - Forensic Medicine KW - methods KW - Hair KW - chemistry KW - Humans KW - Italy KW - Laboratories KW - Morphine KW - Morphine Derivatives KW - N-Methyl-3,4-methylenedioxyamphetamine KW - Narcotics KW - Opioid Peptides KW - Program Evaluation KW - Reproducibility of Results KW - Spain KW - Statistical Distributions KW - Substance Abuse Detection KW - Time Factors N1 - Publication Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't UR - https://doi.org/10.1097/FTD.0b013e31802bb100 ER -