A comparison between rapid stain identification-blood (RSID-blood) and faecal occult blood test (FOB)to identify human blood on various suspicious stains

C. Dogaroiu, I. Diac, A. Petca, M. Gaiculescu, C. Trandafir, L. Matei, R. C. Petca,

Abstract: In forensic serology the need to identify the nature of different stains and spots comes as a frequent request from the authorities, particularly to determine if they are of human nature. Twenty suspicious stains sent to be evaluated at the Mina Minovici National Institute of Legal Medicine in Bucharest were examined with presumptive and confirming tests in order to establish their human nature. Our study aimed to compare the following confirmation tests: Faecal Occult Blood test (FOB) and Rapid Stain Investigation- Blood (RSID-Blood). The comparison confirmed that the latter has a high sensibility and specificity for forensic purposes. Our results sustain that Rapid Stain Investigation Blood is a test best suited for practice compared to the Faecal Occult Blood test because it identifies human blood with a much higher sensibility, requires just a small quantity of a biological sample and is time and cost-efficient.
Keywords: forensic serology, bloodstains, orientation tests, RSID-blood test, Faecal Occult Blood test.