Detection and determination of abused hallucinogens in biological material. Ondra P, Zedníková K, Válka I. Evaluation Studies 2006; 27(Suppl 2): 125-129 PubMed PMID: 17159796 Keywords: Chromatography, Thin Layer, Forensic Toxicology:methods, Gas Chromatography-Mass Spectrometry, Hallucinogens:blood, Humans, Models, Biological, Substance Abuse Detection:methods,. Citation OBJECTIVES: Until recently, routine toxicological analysis of some hallucinogens in biological material posed problems which were only res..... Read abstract