Abstract
A specific, sensitive and rapid method based on high performance liquid chromatography coupled to tandem mass spectrometry (HPLC-MS/MS) was developed for the simultaneous determination of olmesartan (OLM) and hydrochlorothiazide (HCTZ) in human plasma and urine. Solid-phase extraction (SPE) was used to isolate the analytes from biological matrices followed by injection of the extracts onto a C18 column with isocratic elution. Detection was carried out on a triple quadrupole tandem mass spectrometer in multiple reaction monitoring (MRM) mode using negative electrospray ionization (ESI). The method was validated over the concentration range of 1.00-1000 ng/mL and 5.00-5000 ng/mL for OLM in human plasma and urine as well as 0.500-200 ng/mL and 25.0-25,000 ng/mL for HCTZ in human plasma and urine, respectively. Inter- and intra-run precision of OLM and HCTZ were less than 15% and the accuracy was within 85-115% for both plasma and urine. The average extraction recoveries were 96.6% and 92.7% for OLM, and 87.2% and 72.1% for HCTZ in human plasma and urine, respectively. The linearity, recovery, matrix effect and stability were validated for OLM/HCTZ in human plasma and urine.
| Original language | English |
|---|---|
| Pages (from-to) | 743-748 |
| Number of pages | 6 |
| Journal | Journal of Chromatography B: Analytical Technologies in the Biomedical and Life Sciences |
| Volume | 878 |
| Issue number | 9-10 |
| DOIs | |
| State | Published - 15 Mar 2010 |
| Externally published | Yes |
Keywords
- Determination
- HPLC-MS/MS
- Human plasma and urine
- Hydrochlorothiazide
- Olmesartan
- Simultaneous
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