Portable Raman spectroscopy has been used for the detection of the date-rape drug flunitrazepam in spiked beverages that may
be involved in cases of drug-facilitated sexual assault. Solutions of flunitrazepam with different concentrations were prepared in
water and for each beverage type. Although some bands attributable to the beverage matrix are present, they did not interfere
with the identification of the drug. Definitive evidence for contamination of the spiked drink concerned can be acquired within
10 s. The data can be acquired in situ and sample extraction and/or preparation steps are unnecessary. The ability of portable
Raman spectrometers to interrogate spiked alcoholic beverages with flunitrazepam has been demonstrated.