Abstract
A high-performance liquid chromatographic method for the analysis of doxycycline in turkey plasma samples using demeclocycline hydrochloride as the internal standard was developed, optimized and validated. A one-step extraction procedure and an isocratic HPLC method with UV detection were used. No interferences with endogenous compounds or with the anticoagulant were observed. Linear calibration curves (r2>0.99) were obtained in water and plasma between 0 and 600 μg ml-1. Good recoveries for doxycycline (>66%) and demeclocycline (>72%) were seen both in water and in plasma. The coefficient of variation was <9.86% for within-day reproducibility and <7.53% for the between-day reproducibility. The deviation between the mean value found and the true value was <14.5% (accuracy). The limit of detection was 0.1 μg ml-1 in plasma samples. A good stability of doxycycline was observed in water and in plasma samples after storage for six months at -20°C (recovery >91%).
Original language | English |
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Pages (from-to) | 301-308 |
Number of pages | 8 |
Journal | Journal of Chromatography B: Analytical Technologies in the Biomedical and Life Sciences |
Volume | 682 |
Issue number | 2 |
DOIs | |
Publication status | Published - 12 Jul 1996 |
Externally published | Yes |
Keywords
- Doxycycline