Society of Forensic Toxicologists

Dr. Karch was elected a fellow of the Faculty of Legal and Forensic Medicine, Royal College of Physicians (London) in 2006. He is also a fellow of the American Academy of Forensic Sciences, the Society of Forensic Toxicologists (SOFT), the National Association of Medical Examiners (NAME), the Royal Society of Medicine in London, and the Forensic Science Society of the U.K. He is a member of The International Association of Forensic Toxicologists (TLAFT). 

Helmlin, H.J., Bracher, K., Salamone, S.J., and Brenneisen, R., Analysis of 3,4-methylenedioxy-methamphetamine (MDMA) and its metabolites in human plasma and urine, Society of Forensic Toxicologists, Inc., Phoenix, AZ, October 1993 [Abstract]. 

C. Walls. Drug testing in hair a selective review in SOFT conference on hair, 1994. Published by Society of Forensic Toxicologists, Mesa, AZ. 

VI. Society of Forensic Toxicologists (SOFT) Consensus Statements.13... 

VI. SOCIETY OF FORENSIC TOXICOLOGISTS (SOFT) CONSENSUS STATEMENTS... 

Hearn, W. L., Chairman, Advisory Committee on Hair Analysis for Drugs of Abuse. Report to the Annual Meeting of the Society of Forensic Toxicologists, October 13-17, 1992, Cromwell, CT. Harkey, M. R. and Henderson, G. L., Hair analysis for drugs of abuse, in Advances in Analytical Toxicology, Vol. 2, Baselt, R. C., Ed., Yearbook Medical Publishers, Chicago, 1989, 298. 

Ehorn C, Fretthold D, Maharaj M (1994) Ion trap GC/MS/MS for analysis of THC from sweat Abstract presented at the Society of Forensic Toxicologists annual meeting, Tampa, 31 October-4 November, p 11... 

Anderson, D.T., Muto, J.J. and Andrews, J.M. (2000). Case report postmortem tissue distribution of gamma hydroxybutyrate (GHB) and gamma butyrolactone (GBL) in a single fatality. Program and Abstracts of the Society of Forensic Toxicologists Annual Meeting, Milwaukee, WI, Poster 37. 

Prison, G.,Tedeschi, L, Maietti, S. and Ferrara, S.D. (1998). Determination of gamma-hydroxybutyric Acid (GHB) in plasma and urine by headspace solid-phase microextraction (SPME) and gas chromatography-positive ion chemical ionization-mass spectrometry. In Proceedings of the 1998 Joint Society of Forensic Toxicologists and the International Association of Forensic Toxicologists SOFT/TIAFT International Meeting, Spiehler, V. (Ed.), pp. 394 404. 

LeBeau, M.A., Montgomery, M.A., Miller, M.L. and Burmeister, S.G. (1999). Analysis of biofluids for gamma-hydroxyhutyrate (GHB) and gamma-butyrolactone (GBL) by headspace GC/FID and GC/ MS. Presented in part at the 26th Annual Meeting, Society of Forensic Toxicologists, Rio Mar, PR. 

LeBeau M.A., Darwin W.D. and Huestis M.A. (2000b). Intra- and interindividual variations in urinary levels of endogenous GHB. In Proceedings - Society of Forensic Toxicologists Annual Meeting, Milwaukee, WI, p. 5. 

Marinetti, L.J. and Commissaris, R.L. (1999). The effects of gammahydroxybutyrate (GHB) administration alone and in combination with ethanol on general CNS arousal in rats as measured using the acoustic startle paradigm. Society of Forensic Toxicologists Annual Meeting, San Juan, PR, Abstract 71. 

Although immunoassays and other screening techniques may be very sensitive for some benzodiazepines, they may not provide enough cross-reactivity for detecting the wide variety of benzodiazepines available today in the United States, and abroad (1). Laboratories that perform analysis of benzodiazepines for DFSA cases should validate their procedures to ensure that their method is capable of detecting benzodiazepines in accordance with the guidelines established by the Society of Forensic Toxicologists (SOFT) DFSA Committee (2). The benzodiazepine detection limits... 

Society of Forensic Toxicologists (2005) Recommended maximum detection limits for common dfsa drugs and metabolites in urine samples. http //www.soft-tox.org/files/SOFT-DFSA-List.pdf. Accessed Nov 2010... 

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