… GC/MS and LC/MS methods for the comprehensive analysis of propofol and its metabolites
in urine to give … Both analytical methods were compared in terms of metabolite identification, …

… that cannabinoid metabolites may be detected in urine for a … for the detection of cannabinoids
and metabolites are unique for a … metabolites in urine utilizing GC/MS confirmation. J. Anal. …

… This study was based on urine metabolomics analysis with the use of GC-TOF/MS and
UHPLC-QTOF/MS techniques. In other recent study, tyrosine was suggested as a potential …

… Forty-nine endogenous metabolites were separated and identified in GC/MS chromatogram,
of which 26 identified compounds were selected for quantitative analysis to evaluate the …

… System) for GC-MS–based systematic toxicological analysis in urine for increasing the speed
… Methods: We prepared a set of 111 urine samples for GC-MS analysis by acidic hydrolysis, …

… metabolite was seen in the urine of several marijuana smokers shortly after smoking but not
the following day (19). Such a metabolite … THC, and THC metabolites in plasma and urine col…

… We examined the stability of urinary NEO metabolites in freeze-thaw cycles. Standard
spiked-pooled urine (final concentration for each metabolite at 0.6 and 5 μg/L) was stored at −80 C …

… spectrometry (GC–MS). Whereas the immunoassay delivered negative results, analyzing …
urine sample by GC–MS in full scan mode disclosed the presence of α-PVP and its metabolites …

… human metabolism of HHC. Our aim was to identify consumption markers for HHC in urine
… for detection of HHC and its metabolites using LC-MS/MS or GC-MS(/MS) methods for target …

… urine using a GC-MS system available in many laboratories. … of THC, six metabolites, CBD,
and CBN in urine and plasma. … Metabolite/parent and metabolite/metabolite ratios acquired …