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  • Title: Identification of mammalian feces by thin layer chromatography of coprostanol: collaborative study.
    Author: Hoskin GP.
    Journal: J Assoc Off Anal Chem; 1987; 70(3):499-501. PubMed ID: 3112115.
    Abstract:
    Mammalian feces contain coprostanol (5 beta-cholestan-3 beta-ol). In this study, 7 collaborators each tested 45 unknown specimens by a thin layer chromatographic method that uses coprostanol as an indicator of feces. The materials tested were 5 replicates each of 3 test portion sizes (0.5, 1.0, and 5.0 mg) of cockroach excreta (negative), and cow and rat feces (both positive). Of 315 specimens tested, 261 (82.9%) were correctly identified; there were 5 false positives, 26 false negatives, and from 1 collaborator, 23 inconclusive results.
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