Abstract
A sensitive and simple Gas Chromatographic-Mass Spectrometric method was developed and validated for the determination of captopril in human plasma. Thiosalicylic acid was used as an internal standard, and plasma extraction was performed by solid phase extraction. The limit of quantification was 0.5 ng/mL with signal to noise ratio greater than 5. The calibration curve was linear from 1 to 160 ng/mL with r2 greater than 0.99. The coefficient of variation for within and between assay imprecision of the standards and for the limit of quantification were ≤ 10 % and ≤ 7 %, respectively. The percentage of inaccuracy for within- and between-assay including lower and upper limits of quantitation were ≤ 8 % and ≤ 6 %, respectively. The absolute recovery of captopril and thiosalicylic acid in plasma were greater than 98 % and 99 %, respectively. The high sensitivity and accuracy of this method allowed us to measure low concentrations of captopril in plasma for bioequivalence studies in healthy subjects.
Keywords: Captopril, Gas chromatography-mass spectrometry, Solid phase extraction (SPE).
Current Analytical Chemistry
Title:Analysis of Captopril in Human Plasma Using Gas Chromatography-Mass Spectrometry (GCMS) with Solid-Phase Extraction (SPE)
Volume: 6 Issue: 4
Author(s): Z. Chik, A. M. Mustafa, Z. Mohamed and T. C. Lee
Affiliation:
Keywords: Captopril, Gas chromatography-mass spectrometry, Solid phase extraction (SPE).
Abstract: A sensitive and simple Gas Chromatographic-Mass Spectrometric method was developed and validated for the determination of captopril in human plasma. Thiosalicylic acid was used as an internal standard, and plasma extraction was performed by solid phase extraction. The limit of quantification was 0.5 ng/mL with signal to noise ratio greater than 5. The calibration curve was linear from 1 to 160 ng/mL with r2 greater than 0.99. The coefficient of variation for within and between assay imprecision of the standards and for the limit of quantification were ≤ 10 % and ≤ 7 %, respectively. The percentage of inaccuracy for within- and between-assay including lower and upper limits of quantitation were ≤ 8 % and ≤ 6 %, respectively. The absolute recovery of captopril and thiosalicylic acid in plasma were greater than 98 % and 99 %, respectively. The high sensitivity and accuracy of this method allowed us to measure low concentrations of captopril in plasma for bioequivalence studies in healthy subjects.
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Cite this article as:
Chik Z., M. Mustafa A., Mohamed Z. and C. Lee T., Analysis of Captopril in Human Plasma Using Gas Chromatography-Mass Spectrometry (GCMS) with Solid-Phase Extraction (SPE), Current Analytical Chemistry 2010; 6 (4) . https://dx.doi.org/10.2174/1573411011006040329
DOI https://dx.doi.org/10.2174/1573411011006040329 |
Print ISSN 1573-4110 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6727 |
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