Assessing the background levels of body fluids on hands |
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| Affiliation: | 1. Formerly of Forensic Science Northern Ireland, 151 Belfast Road, Carrickfergus, Co., Antrim, BT38 8PL, Northern Ireland, United Kingdom;2. Forensic Science Northern Ireland, 151 Belfast Road, Carrickfergus, Co., Antrim, BT38 8PL, Northern Ireland, United Kingdom;3. Cellmark Forensic Services, Unit B1, Buckshaw Link, Ordnance Road, Buckshaw Village, Chorley, Lancashire, PR7 7EL, United Kingdom;4. Department of Justice and Equality, Forensic Science Ireland, Garda Headquarters, Phoenix Park, Dublin 8, Ireland;5. Formerly of Key Forensic Services, 207C Cavendish Place, Birchwood Park, Warrington WA3 6WU, United Kingdom;6. Eurofins Forensic Services, Sir Alec Jeffreys Building, Calder Park, Wakefield, WF2 7UA, United Kingdom;1. Centre for Forensic Science, Department of Applied Sciences, Faculty of Health & Life Sciences, Northumbria University, Ellison Building, NE1 8ST Newcastle Upon Tyne, United Kingdom;2. Northumbria Sport, Northumbria University, NE1 8ST Newcastle Upon Tyne, United Kingdom;3. King’s Forensics, Department of Analytical, Environmental & Forensic Sciences, King’s College London, SE1 9NH London, United Kingdom;1. School of Life and Environmental Sciences, Deakin University, Geelong, VIC 3220, Australia;2. Office of the Chief Forensic Scientist, Victoria Police Forensic Services Department, Macleod, VIC 3085, Australia;3. School of Agriculture, Biomedicine and Environment, La Trobe University, Bundoora, VIC 3086, Australia;1. School of Life and Environmental Sciences, Deakin University, Geelong, VIC 3220, Australia;2. Office of the Chief Forensic Scientist, Victoria Police Forensic Services Department, Macleod, VIC 3085, Australia;3. College of Science and Engineering, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia;4. Forensic Science SA, GPO Box 2790, Adelaide, SA 5001, Australia;5. School of Agriculture, Biomedicine and Environment, La Trobe University, Bundoora, VIC 3086, Australia |
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| Abstract: | Forensic scientists are often asked to assist the court by evaluating the significance of finding body fluids on the hands of an individual; however, there is an absence of published data regarding the background levels of body fluids on hands. Whilst the scientist can use casework experience to inform the courts on the significance of the results, it would be advantageous to have data which could assist with this interpretation. This study was designed to ascertain the background levels of blood, semen, saliva, hairs/fibres and staining/debris on hands in the general population by sampling from delegates attending a scientific conference.The findings suggest that approximately one third of the population would be expected to have hairs or fibres on their hands and that females are more likely to have visible staining on their hands than males. Presumptive tests for blood and semen yielded negative results in all samples; however, almost 2 % of the samples were found to contain a very low number of sperm heads. In contrast, the majority of samples tested positive for the presence of saliva using the presumptive Phadebas® amylase test. The data supports the caution applied by forensic practitioners when evaluating the presence of saliva detected using the presumptive Phadebas® amylase test based on the lack of specificity and indicates that the RSID™-Saliva test would be more suitable to use. |
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| Keywords: | Body Fluid Forum Body fluid background levels Hands Forensic science Semen Blood Saliva AFSP BFF" },{" #name" :" keyword" ," $" :{" id" :" k0061" }," $$" :[{" #name" :" text" ," _" :" AFSP Body Fluid Forum AFSP" },{" #name" :" keyword" ," $" :{" id" :" k0012" }," $$" :[{" #name" :" text" ," _" :" UK and Ireland Association of Forensic Science Providers |
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