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  • Title: Application of pericardial fluid to the analysis of morphine (heroin) and cocaine in forensic toxicology.
    Author: Contreras MT, Hernández AF, González M, González S, Ventura R, Pla A, Valverde JL, Segura J, de la Torre R.
    Journal: Forensic Sci Int; 2006 Dec 20; 164(2-3):168-71. PubMed ID: 16442766.
    Abstract:
    In this study opiates (morphine and codeine) and cocaine and its related metabolites (benzoylecgonine and cocaethylene) were analyzed in pericardial fluid by GC/MS. This is the first study reporting levels of drugs of abuse in this body fluid. The analytical method used has been previously validated and then applied to 54 drug-related deaths in the Barcelona area (Spain). Median levels were as follows: morphine 589ng/ml, range 19-8857 (n=49); codeine 26ng/ml, range 15-343 (n=35); cocaine 78ng/ml, range 10-220 (n=14), benzoylecgonine 742ng/ml, range 20-3386 (n=15), and cocaethylene 36ng/ml, range 9-100 (n=13). In addition, a comparative study of the concentration of opiates and cocaine in pericardial fluid by both semi-quantitative EMIT d.a.u. and GC/MS (used as reference) was performed. Fairly good correlations for opiates (r=0.905) and cocaine (r=0.859) were found; however, the consistently low results of EMIT in the analysis of cocaine comparing to GC/MS could be caused by matrix effect. In spite of that, it raises the possibility of using the immunoassay as a preliminary technique in forensic toxicology.
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