List of substances and the corresponding minimum concentrations that can be found in control samples


Screening	(µg/l)	Confirmation	(µg/l)
opiates^a	300	total morphine^a,b,c	200
cocaine^a (metabolites)	300	benzoylecgonine^a,b	150
amphetamines^a (metabolites)	300	amphetamine	200
		metaamphetamine^a	200
		MDMA^a	200
		MDA^a	200
		MDEA^a	200
cannabinoids^a	50	11-nor-9-COOH-Δ⁹-THC^a	15
benzodiazepines	300	oxazepam	100
		nordiazepam	100
		7-aminoflunitrazepam	100
methadone	300	methadone	300
methadone	300	EDDP	200
dextropropoxyphene	300	dextropropoxyphene	300
dextropropoxyphene	300	norpropoxyphene	200
buprenorphine	5	buprenorphine	5
LSD	1	LSD	1
Barbiturates	200	Secobarbital	150

Abbreviations

MDMA= 3,4-methylendioxymethamphetamine
MDA= 3,4-methylendioxyamphetamine
MDEA= 3,4-methylendioxyethylamphetamine 11-nor-9-COOH-Δ9-THC= 11-nor-9-carboxi-Δ9-tetrahydrocannabinol
EDDP= 2-ethylen-1,5-dimethyl-3,3-diphenylpirrolidine
LSD= Lysergic acid diethylamide Footnotes that refer to PCQ

List of substances

a. Recommendation from the Group of European Experts (Revista de Toxicologia, 1997, 14:19).

b. Identification of specific substances might be needed for an accurate interpretation of results. Therefore, PCQ includes the analysis of the following substances routinely:

6-monoacethylmorphine, codeine, morphine-3-glucuronide, codeine-6-glucuronide (the minimal concentration for these 4 substances is 200 µg/l) and compounds related to opiates
ecgonine methyl ester for cocaine (the minimal concentration is 200 µg/l).

c. Free + combined = total morphine (this concentration can only be obtain after the hydrolysis of the sample).