methanolic extracts of 300 forensic blood samples known to be positive or negative for drugs were analysed with emit d.a.u . assay kits for amphetamine , cannabinoids , opiates and benzodiazepines ( the latter to analyse for diazepam and the main metabolite n-desmethyldiazepam ) .
C0012010
diazepam
C0011279
desmethyldiazepam