Nylon flocked swab severely reduces Hexagon Obti sensibility. (February 2015)

• Record Type: Journal Article
• Authors: Frippiat, Christophe; De Roy, Gilbert; Fontaine, Louis-Marie; Dognaux, Sophie; Noel, Fabrice; Heudt, Laeticia; Lepot, Laurent
• Is Part Of: Forensic science international. Volume 247(2015)
• Page Start: 126
• Page End: 129
• Publication Date: 2015-02
• Subjects: Flocked swab -- Hexagon Obti -- Blood -- Inhibition; Medical jurisprudence -- Periodicals; Chemistry, Forensic -- Periodicals; Forensic Medicine -- Periodicals; Médecine légale -- Périodiques; Chimie légale -- Périodiques; Gerechtelijke geneeskunde; Gerechtelijke chemie; Gerechtelijke psychiatrie; Chemistry, Forensic; Medical jurisprudence; Electronic journals; Periodicals; Electronic journals; 614.1
• DOI: 10.1016/j.forsciint.2014.12.009
• Languages: English
• ISSNs: 0379-0738

Abstract

Highlights: Ethylene oxide treated flocked swab inhibit Hexagon Obti and HemDirect blood tests. Sperm detection (PSA strip) is not affected by ethylene oxide treated flocked swab. The observed inhibition is due to sodium dodecyl sulfate (SDS). SDS is used to increase the hydrophilic ability of the flocked swab. Abstract: Hexagon Obti immunological blood test and flocked swab are widely used in forensic laboratories. Nevertheless, up to now, no compatibility tests have been published between sampling with the ethylene oxide treated flocked swab and the Hexagon Obti blood detection strip. In this study, we investigated this compatibility. Our work shows that sampling with ethylene oxide treated flocked swab reduces by a factor of at least 100 the detection threshold of blood using the Hexagon Obti immunological test.