Think your drink was drugged? The evidence suggests that it was unlikely:
http://en.wikipedia.org/wiki/Drug_facilitated_sexual_assault#Frequency_of_occurrence
" A...study of 2,003 urine samples of victims of suspected DFSAs found less than 2% tested positive for Rohypnol or GHB."
http://en.wikipedia.org/wiki/Drug_facilitated_sexual_assault#Frequency_of_occurrence
" A...study of 2,003 urine samples of victims of suspected DFSAs found less than 2% tested positive for Rohypnol or GHB."