Universidad Peruana Cayetano Heredia

Presumptive tests: A substitute for Benzidine in blood samples recognition

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dc.contributor.author Gomes, C.
dc.contributor.author López-Matayoshi, C.
dc.contributor.author Palomo-Díez, S.
dc.contributor.author López-Parra, A. M.
dc.contributor.author Cuesta-Alvaro, P.
dc.contributor.author Baeza-Richer, C.
dc.contributor.author Gibaja, J. F.
dc.contributor.author Arroyo-Pardo, E.
dc.date.accessioned 2019-01-25T16:20:57Z
dc.date.available 2019-01-25T16:20:57Z
dc.date.issued 2017
dc.identifier.uri https://hdl.handle.net/20.500.12866/4809
dc.description.abstract The nature of the sample in a forensic case is one of the most important factors, since it determines the posterior analysis, helping to define or discard its identity (like blood versus semen). A presumptive test is a qualitative analysis that allows to identify, or confirm, the presence of a substance in a sample. These determinations usually occur, after a chemical reaction, and a specific colour is produced. A false positive is another substance reacting the same way, producing the expected result. The aim of this work was to evaluate the most effective presumptive test (with fewer false-positives) when analysing products that could look and behave like blood during a forensic screening assay. Eight different products were tested, like Betadine®, and four reagents were considered: Tetramethylbenzidine, O-toluidine, Leuchomalachite green and BlueStar® Forensic (BlueStar). Each product was tested with the reagents five times − mixed with human blood (3:1), with three different animal blood (3:1), and then unmixed. Our results indicated that Leuchomalachite green is the most suitable presumptive test, since it was the reagent with less false positives. en_US
dc.language.iso eng
dc.publisher Elsevier
dc.relation.ispartofseries Forensic Science International
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject 2 methylaniline en_US
dc.subject Article en_US
dc.subject benzidine en_US
dc.subject Benzidine en_US
dc.subject Blood en_US
dc.subject blood sampling en_US
dc.subject bluestar en_US
dc.subject BlueStar® forensic en_US
dc.subject controlled study en_US
dc.subject False positive en_US
dc.subject human en_US
dc.subject leuchomalachite green en_US
dc.subject Leuchomalaquite green en_US
dc.subject nonhuman en_US
dc.subject Ortho-Tolidine en_US
dc.subject povidone iodine en_US
dc.subject priority journal en_US
dc.subject reagent en_US
dc.subject tetramethylbenzidine en_US
dc.subject Tetramethylbenzidine en_US
dc.subject unclassified drug en_US
dc.title Presumptive tests: A substitute for Benzidine in blood samples recognition en_US
dc.type info:eu-repo/semantics/article
dc.identifier.doi https://doi.org/10.1016/j.fsigss.2017.09.213
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#3.01.09
dc.relation.issn 1872-6283


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