Drug Compound   Weekday Sample   Weekend Sample       Collection Presence Response Collection Presence Response Amphetamine 1st - NA 1st - NA   2nd + 816 2nd - NA Methamphetamine 1st - NA 1st + 4770   2nd - NA 2nd + 4720 MDMA 1st + 370 1st - NA   2nd + 673 2nd - NA Heroin 1st + 1380 1st - NA   2nd - NA 2nd - NA Cocaine 1st - NA 1st + 331000   2nd + 187000 2nd + 411000 Benzoylecognine 1st + 389000 1st + 834000   2nd + 421000 2nd + 1000000 Flurazepam 1st - NA 1st - NA   2nd - NA 2nd - NA Alprazolam 1st + 2550 1st - NA   2nd + 2650 2nd + 7900 Lorezepam 1st + 44800 1st + 44600   2nd + 30500 2nd + 30800 Diazepam 1st - NA 1st - NA   2nd - NA 2nd - NA THC-COOH 1st + 2630 1st + 1910   2nd + 17400 2nd + 14000 THC-OH d3 1st + 16300 1st + 32900   2nd + 35500 2nd + 64500

Table 4: Compounds detected in the samples by LC-MS, Note: ’+“=Present; ’-“=Absent, Weekday sample 1st=Tuesday, 2nd=Thursday , Weekend samples are all Staken on Saturday.