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Dextropropoxyphene Poisoning: Problems with Interpretation of Analytical Data

West Midlands Poisons Unit, Dudley Road Hospital, Birmingham, B18 7QH UK, Clinical Chemistry Department, Dudley Road Hospital, Birmingham B18 7QH, UK

J.A. Vale

Royal College of Physicians of London

1 Difficulties in the estimation and interpretation of dextropropoxyphene and norpropoxyphene analyses have added to the controversy concerning the toxicity of these compounds.

2 Poor performance in external proficiency assessment trials reflects the unsatisfactory state of many dextropropoxyphene and norpropoxyphene analyses in general use.

3 There is substantial overlap between blood concentrations of dextropropoxyphene and norpropoxyphene encountered in chronic therapeutic dose and those associated with acute toxicity.

4 As dextropropoxyphene and norpropoxyphene are often taken in overdose with other drugs, their blood concentrations must be interpreted in the context of careful identification and quantitation of such agents.

5 The present availability of accurate methods for measurement of parent drug and metabolite should now make anecdotal reports unsupported by analytical data entirely superfluous.

Human & Experimental Toxicology, Vol. 3, No. 1 suppl, 95s-101S (1984)
DOI: 10.1177/096032718400300111


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