A Study on the Reliability of an On-Site Oral Fluid Drug Test in a Recreational Context

Table 2

Linearity of the HS-SPME-GC-MS procedure for compounds under investigation.

Compounds	Slope	Intercept		LOD (ng/pad)	LOQ (ng/pad)	Analytical recovery (%)
A	0.64	0.07	0.995	0.37	1.11	100.8
MA	2.08	0.20	0.990	0.68	2.04	99.2
MDA	1.93	−0.16	0.988	0.60	1.80	88.8
Ketamine	6.47	−1.16	0.990	0.73	2.19	84.4
MDMA	5.57	0.86	0.996	0.34	1.02	100.8
MDE	5.73	0.14	0.998	0.26	0.78	103.2
MBDB	8.34	0.77	0.999	0.11	0.33	98.8
Methadone	9.74	−1.46	0.990	0.71	2.13	85.5
Cocaine	6.18	0.05	0.996	0.35	1.05	107.6
Cocaethylene	2.01	−0.42	0.992	0.51	1.53	90.4
THC	10.52	0.03	0.990	0.06	0.18	102.0
Codeine	4.73	0.63	0.996	0.06	0.18	96.0
Morphine	7.32	2.05	0.995	0.43	1.29	96.4
6-MAM	9.52	3.74	0.993	0.39	1.17	105.6

A, amphetamine; MA, methamphetamine; MDA, methylenedioxyamphetamine; MDMA, methylenedioxymethamphetamine; MDE, methylenedioxyethamphetamine; MBDB, N-methyl-1-(1,3-benzodioxol-5-yl)-2-butanamine; THC, 9-Tetrahydrocannabinol; 6-MAM, 6-monoacetylmorphine.