Which makes me wonder if a positive test is indeed what secured the indictment. Yeah, seems difficult for the accusation of administering rohypnol to carry any weight without positive test results. And if they didn't do testing at the hospital then someone really blew it.
BTW, just to be clear, I had a prescription for Rohypnol when I lived in Russia, when I had severe insomnia for a period. Back in the U.S. it was switched to Trazodone. I was taking one or the other for about a year and a half.