Analysis of oseltamivir active metabolite, oseltamivir carboxylate, in biological materials by HPLC-UV in a case of death following ingestion of Tamiflu.
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Fuke C, Ihama Y, Miyazaki T
Analysis of oseltamivir active metabolite, oseltamivir carboxylate, in biological materials by HPLC-UV in a case of death following ingestion of Tamiflu.
Leg Med (Tokyo). 2008 Mar;10(2):83-7. doi: 10.1016/j.legalmed.2007.07.003. Epub 2007 Aug 27.
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- 17720604 [ View in PubMed]
- Abstract
An HPLC-UV method was established for determination of oseltamivir carboxylate, an active metabolite of oseltamivir, in biological materials. Oseltamivir carboxylate and floropipamide (internal standard) were extracted by using a mixed mode cation exchange extraction cartridge. The recovery yields of oseltamivir carboxylate from spiked blood at concentrations 0.1microg/ml and 1.0microg/ml were 103.8+/-16.9% and 95.0+/-4.3%, respectively. Linearity was obtained in the concentration from 0.1 to 3.0microg/ml. The detection limit was 0.04microg/ml (S/N=3). This method was applied to a case of death from falling after ingestion of a Tamiflu capsule containing 75mg of oseltamivir. Concentration of oseltamivir carboxylate in the femoral blood was 0.4microg/ml. The highest concentration in all specimens was in the liver at 18.3microg/g. In all brain samples, the concentrations were not higher than the quantification limit (0.1microg/g).
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