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Originally Posted by Tamerlain
I was under the impression that Rohypnol went through the system so quickly that it couldn't be detected. Wouldn't this explain why they couldn't find any traces of it?
-Tamerlain
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Rohypnol is a benzodiazepine, like valium or xanax, which remains in the system for 2 - 3 days (or up to 10 if taken regularly, though that wouldn't factor in this situation).
GHB remains in the system for 1 - 2 days.
Ketamine (slang: "K", "Special K", "Vitamin K") remains in the system for 2 - 4 days.
The specific amount of time for each of these to leave your body is different, and since benzodiazepines are water-solluble (a biology term, not meaning they dissolve in water as a pill), they are excreted in the urine after being used. The quicker the researchers get a urine sample, the higher the success rate of finding the drug in the system. For a woman, especially one with lower body weight, it can take more than enough time for the drug to leave the system and the hospital to catch it- keep in mind that the women studied will either have gone right to the hospital after the rape, or the next morning. Either way, there should be more than sufficient evidence to detect its presence.