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Assaying of Warfarin in Iranian Warfarin Resistance Patients Blood by HPLC

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A simple and rapid HPLC method with IN detecting system has been used in determination of warfarin level in plasma of Iranian patients who received different doses of this drug. Six resistance (10-70 mg day:") and 5 sensitive patients (0.5-2.5 mg day:") were selected for this study. Range of warfarin level in plasma was between 0.93 and 22.8. After determination of warfarin level in warfarin sensitive and especially, warfarin resistance patients, we are going to find a relationship between this level and phannacokinetic or pharmacogenetic factors. In the separate study which was done in our laboratory on the gene that is possibly responsible for warfarin resistance we did not find any mutation in our patient with high warfarin concentration in their blood.

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