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A fast and reliable method using solid-phase extraction and ultra-performance liquid chromatography-tandem mass spectrometry… Expand Our objective was to investigate whether codeine or one of its metabolites contributes substantially to central nervous effects… Expand The presence of the heroin metabolite 6-monoacetylmorphine (6-MAM) in urine is used to definitively identify recent heroin abuse… Expand Previously reported clinical trials have shown that measurement of the different forms of prostate-specific antigen (PSA) (1) is… Expand Codeine is an old drug that is still widely used to treat mild and moderate pain. It is mainly metabolised by glucuronidation… Expand 1. The kinetics of codeine and seven of its metabolites codeine-6-glucuronide (C6G), norcodeine (NC), NC-glucuronide (NCG… Expand A high-performance liquid chromatographic method has been developed for the detection, separation and measurement of codeine and… Expand 1. The pharmacokinetics, metabolism and partial clearances of codeine to morphine, norcodeine and codeine-6-glucuronide after… Expand 1. The 8 h urinary excretion of codeine and seven of its metabolites was compared in 149 healthy Swedish Caucasians and 133… Expand A simple quantitative method for determining codeine, norcodeine, and morphine in urine by high-performance liquid chromatography… Expand