FIA-MS/MS determination of creatinine in urine samples undergoing butylation

Simultaneous quantitation of urinary albumin and creatinine for rapid clinical albuminuria diagnostics using high-throughput paper spray mass spectrometry

“…For example, Zahoor et al 41 used UHPLC-MS for determination of creatinine in urine and achieved LOD and LOQ of 0.280 and 0.663 mmol L −1 , respectively. Jurdáková et al 42 reported LOD of 0.02 mmol L −1 and LOQ of 0.20 mmol L −1 in the analysis of urinary creatinine using flow injection analysis-tandem mass spectrometry.…”

Assessment of urine sample collection and processing variables for extracellular vesicle-based proteomics

“…Creatinine has been widely used to correct the excretion rate or urine concentration of a variety of endogenous and exogenous substances. 32 On the other hand, MS-based analyses typically involve the use of the total protein/peptide amount to normalize samples. We attempted to investigate which urine normalization method is sufficient to minimize pre-analytical variables.…”

Rapid Assessment of Exercise State through Athlete’s Urine Using Temperature-Dependent NIRS Technology

“…Therefore, urine can be used as an analytical test to assess whether the athlete takes the sport's supplement creatine. Traditional methods of detecting the supplement creatine usually have the disadvantages of complex sample preparation, being time-consuming, and the need to use toxic and harmful reagents [ 6 – 8 ], which cannot meet the needs of rapid and accurate detection. Therefore, it is necessary to develop a new technology to rapid detect the status of basketball player before and after taking creatine.…”