doi: 10.1016/s0378-4347(00)81371-7.
A simplified assay of furosemide in plasma and urine by high-pressure liquid chromatography
- PMID: 26691
- DOI: 10.1016/s0378-4347(00)81371-7
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A simplified assay of furosemide in plasma and urine by high-pressure liquid chromatography
J Chromatogr.
.
Abstract
A simplified high-pressure liquid chromatograhic method for determination of furosemide in plasma and urine has been developed using a fluorometric detector directly coupled to the column effluent. The method includes an ether extraction from acidified biologic samples. The mobile phase used for chromatography on a reversed-phase column (C15 hydrocarbon permanently bonded to silica particles) is sufficiently acidic to induce fluorescence of furosemide. The methylester of furosemide is employed as an internal standard. The sensitivity is 0.1 and 0.25 microgram per ml plasma and urine, respectively. The applicability to pharmacokinetic studies of furosemide is shown.
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