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).