Sensitive, wide-range and high-throughput quantification of cyclosporine in whole blood using ultra-performance liquid chromatography coupled to tandem mass spectrometry and comparison with an antibody-conjugated magnetic immunoassay.
Takuma WatanabeRyota TanakaHiroyuki OnoYosuke SuzukiRyosuke TatsutaHiroki ItohPublished in: Biomedical chromatography : BMC (2021)
Because either trough or peak concentration at 2 h after administration is measured in routine therapeutic drug monitoring for cyclosporine A (CyA), a quantification method with a wide-range calibration curve capable of simultaneously measuring both concentrations is required. We developed a sensitive, wide-range and high-throughput quantification method for CyA in whole blood using ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS), and compared patients' blood CyA levels measured by UPLC-MS/MS and antibody-conjugated magnetic immunoassay (ACMIA). Whole blood samples were prepared by solid-phase extraction using Oasis HLB μElution plate. The UPLC-MS/MS assay showed excellent linearity over a wide calibration range of 5-2500 ng/mL. Within-batch accuracy and precision as well as batch-to-batch accuracy and precision fulfilled the criteria of US Food and Drug Administration guidelines. The blood CyA concentrations measured by the UPLC-MS/MS assay correlated strongly with those measured by ACMIA. A Bland-Altman plot showed a fixed error between CyA concentrations measured by the two methods, and the concentrations measured by the UPLC-MS/MS method were consistently lower than those measured by ACMIA. We have succeeded to develop a sensitive, wide-range and high-throughput quantification method for CyA in whole blood using UPLC-MS/MS.
Keyphrases
- quantum dots
- simultaneous determination
- liquid chromatography tandem mass spectrometry
- high throughput
- tandem mass spectrometry
- ms ms
- solid phase extraction
- liquid chromatography
- ultra high performance liquid chromatography
- high performance liquid chromatography
- molecularly imprinted
- mass spectrometry
- gas chromatography
- high resolution mass spectrometry
- high resolution
- end stage renal disease
- gas chromatography mass spectrometry
- peritoneal dialysis
- clinical practice
- drug administration
- chronic kidney disease
- newly diagnosed
- ejection fraction
- photodynamic therapy