Hair and saliva can also be analyzed; hair is useful when a long time has transpired since ingestion, and saliva for workplace drug tests.
For urine samples, metabolites can be identified 60 hours to 28 days, depending on the dose and analytical method used.
The presence of 7-aminoflunitrazepam, a pharmacologically-active metabolite and in vitro degradation product, is useful for confirmation of flunitrazepam ingestion.
In postmortem specimens, the parent drug may have been entirely degraded over time to 7-aminoflunitrazepam.
Flunitrazepam seems to have a particularly high risk of road traffic accidents compared to other hypnotic drugs.
Extreme caution should be exercised by drivers after taking flunitrazepam.
Flunitrazepam is classed as a nitro-benzodiazepine. It is the fluorinated N-methyl derivative of nitrazepam.