The fallacy of the two-minute acid phosphatase cut off

Science & Justice : Journal of the Forensic Science Society
J LewisR Talbot

Abstract

Research was carried out to determine whether the likelihood of obtaining a positive Acid Phosphatase (AP) test result is affected by the make and type of paper used. Also, we aimed to investigate the frequency of AP positive reactions occurring after 2min using a series of known semen dilutions and to determine whether spermatozoa transfer onto the paper during the act of AP screening. In this research, most brands of paper tested were able to detect a 1 in 40 semen dilution within 2min. Leaving AP test papers for longer will allow the detection of greater dilutions of semen and as the amount of ejaculation is not reliably known in most casework situations and levels of AP activity can vary in different men, this will increase the seminal detection rate in sexual offence allegations.

References

Feb 1, 1974·Forensic Science·A Davies, E Wilson
Jul 1, 1971·Journal - Forensic Science Society·S Sivaram, H L Bami
Jun 1, 1982·The American Journal of Forensic Medicine and Pathology·R C Shaler, P Ryan
Jul 19, 2000·The American Journal of Cardiology·C M Meston
Jul 21, 2004·Journal of Clinical Forensic Medicine·Roy J Levin, Willy van Berlo
May 16, 2012·Science & Justice : Journal of the Forensic Science Society·G Davidson, T B Jalowiecki
Sep 5, 2015·Forensic Science International : Synergy·Yueh Shyang PingChristopher Kiu Choong Syn

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Citations

Apr 23, 2013·Science & Justice : Journal of the Forensic Science Society·Paul Redhead, Melanie K Brown
Nov 6, 2013·Science & Justice : Journal of the Forensic Science Society·J LewisN Wilson
Oct 4, 2014·Forensic Science International : Synergy·Rory SimmonsKevin Farrugia
Mar 11, 2015·Science & Justice : Journal of the Forensic Science Society·Pilar MartínezInmaculada Atienza

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