The samples used in these studies could only be verified as having been submitted within a 72-hour time frame or a 48-hour time frame.Ī three-year study in the UK detected sedatives or disinhibiting drugs that victims said they had not voluntarily taken in the urine of two percent of suspected drug-facilitated sexual assault victims. Ī similar study of 2,003 urine samples of victims of suspected drug-facilitated sexual assaults found less than 2% tested positive for Rohypnol or GHB. Ī 1999 study of 1,179 urine specimens from victims of suspected drug-facilitated sexual assaults in 49 American states found six (0.5%) positive for Rohypnol, 97 (8%) positive for other benzodiazepines, 48 (4.1%) positive for GHB, 451 (38%) positive for alcohol and 468 (40%) negative for any of the drugs searched for. No comprehensive data exists on the frequency of drug-facilitated sexual assaults involving the use of surreptitious drug administration, due to the report rate of assaults and because rape victims who do report are often either never tested for these drugs, are tested for the wrong ones, or the tests are administered after the drug has been metabolized and left their body. 3.5 3,4-Methylenedioxymethamphetamine (MDMA).Incapacitating agent that may be used to commit rape Rape