Identification of alprazolam in hair in two cases of drug-facilitated incidents

In the first criminal case, alprazolam tested positive in two consecutive 2 cm hair segments at 4.9 and 2.4 pg/mg, from a 12-year-old girl, assaulted by her father who had sedated her three or four times. In the other case, alprazolam was detected in four consecutive 1 cm hair segments at 3.1-0.4 pg/mg, obtained from an adolescent who had been forced to prostitute herself.