Comparison of LUCIO®-direct ELISA with CEDIA immunoassay for 'zero tolerance' drug screening in urine as required by the German re-licensing guidelines.
The performance of the previously validated LUCIO(®)-Direct-enzyme linked immunosorbent assay (direct ELISA) screening tests according to forensic guidelines is compared to that of cloned enzyme donor immunoassays (CEDIA) test for drugs of abuse in urine as defined in the new re-licensing German medical and psychological assessment (MPA) guidelines. The MPA screening cut-offs correspond to 10 ng/ml 11-nor-delta-9-tetrahydrocannabinol-9-carboxylic acid (THC-COOH), 50 ng/ml amphetamine and designer amphetamines, 25 ng/ml morphine, codeine and dihydrocodeine, 30 ng/ml benzoylecgonine, 50 ng/ml methadone metabolite, 2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine (EDDP) and metabolites of diazepam, oxazepam, bromazepam, alprazolam, flunitrazepam and lorazepam at 50 ng/ml. Average relative sensitivities and relative specificities were 99.7 % and 98.4 % for direct ELISA and 66 % and 91.4 % for CEDIA, respectively.
Labor Krone, Siemensstr. 40, D-32105, Bad Salzuflen, Germany. ragius@laborkrone.de
Ronald
R
Agius
Thomas
T
Nadulski
Hans-Gerhard
HG
Kahl
Bertin
B
Dufaux
D000662:Amphetamines / Q000652:urine; D000701:Analgesics, Opioid / Q000652:urine; D001569:Benzodiazepines / Q000652:urine; D002186:Cannabinoids / Q000652:urine; D003042:Cocaine / Q000652:urine; D004797:Enzyme-Linked Immunosorbent Assay / Q000379:methods / Q000592:standards; D006801:Humans; D007124:Immunoenzyme Techniques / Q000379:methods* / Q000592:standards; D008691:Methadone / Q000652:urine; D004364:Pharmaceutical Preparations / Q000652:urine*; D012680:Sensitivity and Specificity; D015813:Substance Abuse Detection / Q000379:methods* / Q000592:standards
D000662:Amphetamines; D000701:Analgesics, Opioid; D002186:Cannabinoids; D004364:Pharmaceutical Preparations; D001569:Benzodiazepines; D003042:Cocaine; D008691:Methadone