A Rapid and Sensitive Radioreceptor Assay for Benzodiazepine in Plasma

Phil Skolnick, Frederick K. Goodwin, Steven M. Paul

Research output: Contribution to journalArticle

43 Scopus citations

Abstract

We describe a rapid and sensitive radioreceptor assay for measuring benzodiazepines in plasma. This method is based on the competition between tritiated diazepam and pharmacologically active benzodiazepines present in plasma, for binding sites on rat brain synaptosomal membranes. No interference is obtained with drug-free plasma or plasma samples containing high concentrations of other commonly used drugs. High correlations (r = 0.98; P <.001) were obtained between the “diazepam equivalents,” measured in plasma with the radioreceptor assay and the levels of diazepam and nordiazepam obtained by gas-liquid chromatography. The radioreceptor assay is rapid, sensitive, specific, and requires no sophisticated equipment or methods. It should therefore prove useful in monitoring blood benzodiazepine levels for both therapeutic and toxicologic purposes.

Original languageEnglish
Pages (from-to)78-80
Number of pages3
JournalArchives of General Psychiatry
Volume36
Issue number1
DOIs
StatePublished - Jan 1979
Externally publishedYes

Fingerprint Dive into the research topics of 'A Rapid and Sensitive Radioreceptor Assay for Benzodiazepine in Plasma'. Together they form a unique fingerprint.

  • Cite this