Case         t Analyte Case t Analyte
Nº2 1 Cocaine + 6 MAM Nº21 2 Codeine
Nº 3 3 Cocaine Nº23 1 Δ9tetrahydrocannabinol
Nº4 1 Cocaine Nº27 3 Cocaine
Nº6 3 Cocaine Nº28 3 Cocaine
Nº9 2 Cocaine +codeine Nº29 2 Cocaine+ecgonidine-metilester
Nº10 2 Cocaine Nº30 2 Cocaine+Δ9tetrahydrocannabinol
Nº11 2 Cocaine Nº31 3 Cocaine+Δ9tetrahydrocannabinol
Nº15 2 Cocaine Nº32 3 Cocaine
Nº18 2 Cocaine Nº36 <1 Cocaine
Nº20 2 Δ9tetrahidrocannabinol Nº48 2 Cocaine
t: time in days of previous consumption
Table 4: Analytes confirmed by CG-MS in positive results (N=20).