Conclusions: Even if urine THC-COOH levels were found to be much higher among problematic cannabis users, such method seems poorly performant in identifying them from other regular cannabis users. Nevertheless, individuals presenting with high value for THC-COOH on urine drug testing should definitely...
A fast gas chromatography (GC)-MS method has been developed and validated for the simultaneous screening of different classes of drugs of abuse in urine. Tetrahydrocannabinol metabolite, cocaine, opiates such as morphine, O -6-monoacetylmorphine ( O -6-MAM), codeine, opioids such as ...