Validation studies of rapid stain identification-blood (RSID-blood) kit in forensic caseworks |
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Authors: | Stefania Turrina |
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Affiliation: | Department of Medicine and Public Health, Institute of Legal Medicine, Forensic Genetic Laboratory, University of Verona, Policlinico G.B. Rossi, 37134 Verona, Italy |
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Abstract: | When bloodstains are detected at crime scene using presumptive tests (e.g. luminol, phenolphthalein, leuchomalachite green), it is important to establish the real human nature of each stain. This is possible using confirmatory tests. One of these is rapid stain identification-blood (RISD-blood) a lateral flow immuno-chromatographic strip test format which allows the identification of human blood by detection of glycophorin A, a red blood cell membrane antigen, using two anti-human glycophorin A (GPA) monoclonal antibodies.The aim of this study is to assess the sensitivity of RSID-blood test in old, degraded bloodstains and in some bloodstains previously treated with BlueStar Forensic, a presumptive test which is often used in crime scene investigations to detect latent bloodstains. The genetic analysis of all bloodstains of confirmed human nature was subsequently performed using the AmpF1STR Identifiler PCR Amplification Kit (Applied Biosystems), to validate the possibility of obtain a consistent and reliable DNA typing results. |
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Keywords: | Forensic DNA typing Human blood Hemoglobin detection Immuno-chromatographic test |
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