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Issue 12, 1998
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Metabolites in feces can be important markers for the abuse of anabolic steroids in cattle†

Abstract

In Belgium, to control the abuse of anabolic steroids in cattle, urine samples have been gradually replaced by feces samples, because the latter can be obtained more easily from living animals. Urine and feces samples were collected from heifers after administration of boldenone, norethandrolone or ethylestrenol. Metabolites present in feces or urine were determined by GC-MS. Large qualitative and quantitative differences in the metabolic profiles were observed. In feces, in contrast to urine, the parent compounds or their major metabolites were detectable only shortly after administration. On the other hand, metabolites resulting from the reduction of the 3-oxo group and the unsaturated carbon–carbon bonds, present on the A-ring, allow for long-term detection in feces. A-ring reduced metabolites have been identified in samples found positive for norgestrel, boldenone, methylboldenone and methyltestosterone, respectively. These results are in agreement with concomitant in vivo experiments.

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Article type: Paper
DOI: 10.1039/A805009K
Analyst, 1998,123, 2449-2452

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    Metabolites in feces can be important markers for the abuse of anabolic steroids in cattle†

    M. Van Puymbroeck, L. Leyssens, J. Raus, M. Van Puymbroeck, D. Vanderzande, J. Gelan and J. Raus, Analyst, 1998, 123, 2449
    DOI: 10.1039/A805009K

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