Kettoman, who'd never had a positive scan in eight years, tested positive for ketamine, a prescription sedative that is also abused as a party drug. "I was offered the opportunity to speak to a lieutenant, but declined. I was already embarrassed and upset, trying to keep from crying in front of the packed lobby full of visitors," she said. On a subsequent visit, she said, she tested positive for benzodiazepine, a prescription tranquilizer. She went to wash her hands and then — to her disbelief — tested positive for an entirely different drug.