Hair analysis of antidepressants and antipsychotics—Overview of quantitative data. Issue 6 (17th March 2020)

• Record Type: Journal Article
• Authors: Methling, Maximilian; Krumbiegel, Franziska; Hartwig, Sven
• Is Part Of: Drug testing and analysis. Volume 12:Issue 6(2020)
• Page Start: 659
• Page End: 676
• Publication Date: 2020-03-17
• Subjects: antidepressants -- antipsychotics -- dose‐concentration relationship -- hair analysispostmortem hair concentration; Drugs -- Analysis -- Periodicals; Drug testing -- Periodicals; Chemistry, Forensic -- Periodicals; 615.1901
• DOI: 10.1002/dta.2784
• Languages: English
• ISSNs: 1942-7603

Abstract

Abstract: Antidepressant and antipsychotic drugs are regularly encountered in different aspects of forensic toxicology, and some cases require the examination of hair samples. In this study, common antidepressant and antipsychotic drugs regarding hair concentrations over the past decades were reviewed. Although numerous publications around method validations, case reports, or controlled dose studies were found, apparently there is a lack of comprehensive data for many substances. Information on the hair length and dosage across the publications varied largely, and case numbers were generally low except for several retrospective controlled dose studies. Many substances were described only in method validations or case reports, and data were obtained from small case numbers. On the contrary, clozapine, haloperidol, amitriptyline, nortriptyline, risperidone and its metabolite, methylphenidate, citalopram, chlorpromazine, chlorprothixene, and quetiapine had a well‐founded database as these substances were investigated in controlled dose studies with higher case numbers. Given the advancements made in analytical techniques over the past years, gas chromatography–mass spectrometry and liquid chromatography with tandem mass spectrometry techniques were the methods of choice and allowed the detection of chemical compounds at low concentrations. The controversy around a potential use of hair analysis to estimate the dosage remains as dose‐concentration studies provided divergent results. A harmonization on the investigated hair length as well as on the extraction protocol would be of favor to achieve better comparability. Although hair analysis research focused mainly on drug abuse, availability of more data on antidepressants and antipsychotics would help to gain better knowledge and assist other forensic investigators. Abstract : This review evaluated the availability of quantitative data on antidepressants and antipsychotics in hair. There was an imbalance between some very extensively researched substances and many rather little researched substances. Furthermore, it could be shown that the hair lengths used, extraction methods and dosage informations were very inconsistent and require harmonisation.