Le khithi isebenza ekutholweni kwekhwalithi ye-metabolite ye-cocaine ye-benzoylecgonine kusampula yomchamo womuntu,esetshenziselwa ukuhlonza nokuxilonga ukuthi umlutha wezidakamizwa. Le khithi inikeza kuphela imiphumela yokuhlolwa ye-cocaineI-metabolite ye-benzoylecgonine, kanye nemiphumela etholiwe izosetshenziswa ngokuhambisana nolunye ulwazi lomtholampiloukuze kuhlaziywe.