Chapter title |
Quantification of Iohexol in Serum by High-Performance Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
|
---|---|
Chapter number | 20 |
Book title |
Clinical Applications of Mass Spectrometry in Drug Analysis
|
Published in |
Methods in molecular biology, January 2016
|
DOI | 10.1007/978-1-4939-3252-8_20 |
Pubmed ID | |
Book ISBNs |
978-1-4939-3251-1, 978-1-4939-3252-8
|
Authors |
Faye B. Vicente, Gina Vespa, Alan Miller, Shannon Haymond |
Abstract |
Iohexol is a nonradioactive contrast medium, and its clearance from serum or urine is used to measure glomerular filtration rate (GFR). GFR is the most useful indicator of kidney function and progression of kidney disease. GFR determination using iohexol clearance is increasingly being applied in clinical practice, given its advantages over and correlation with inulin. We describe a high-performance liquid chromatography tandem mass spectrometry (LC-MS/MS) method for iohexol clearance, requiring only 50 μL of serum. The sample preparation involves protein precipitation with LC/MS-grade methanol, containing ioversol as the internal standard. Samples are centrifuged and supernatant is dried under nitrogen gas at room temperature. Samples are reconstituted with mobile phase (ammonium acetate-formic acid-water). Iohexol is separated using an HPLC gradient method on a C-8 analytical column. MS/MS detection is in the multiple-reaction monitoring (MRM) mode and the transitions monitored are m/z 822.0 to m/z 804.0 and m/z 807.0 to m/z 588.0 for iohexol and ioversol, respectively. |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 11 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 3 | 27% |
Researcher | 2 | 18% |
Student > Master | 2 | 18% |
Student > Doctoral Student | 1 | 9% |
Librarian | 1 | 9% |
Other | 0 | 0% |
Unknown | 2 | 18% |
Readers by discipline | Count | As % |
---|---|---|
Agricultural and Biological Sciences | 2 | 18% |
Chemistry | 2 | 18% |
Immunology and Microbiology | 1 | 9% |
Biochemistry, Genetics and Molecular Biology | 1 | 9% |
Neuroscience | 1 | 9% |
Other | 1 | 9% |
Unknown | 3 | 27% |