XIE Jun-ping, FENG Ling-ling, KUANG Xia. Determination of Methotrexate Level in Plasma Using Higher Doses Methotrexate by HPLC[J]. Chinese journal of experimental traditional medical formulae, 2010, 16(11): 69-72.
XIE Jun-ping, FENG Ling-ling, KUANG Xia. Determination of Methotrexate Level in Plasma Using Higher Doses Methotrexate by HPLC[J]. Chinese journal of experimental traditional medical formulae, 2010, 16(11): 69-72.DOI:
Objective: To establish a HPLC method for determination of methotrexate concentration in plasma using higher doses. Method: The separation was performed in a Gold column(4.6 mm×150 mm
5 μm) with a mobile phase of methanol: phosphate buffer (19∶81
pH 7.2) and determinated at 306 nm.Result: The measurable lowest concentration was 0.002 μmol·L-1. The experiment showed that the recovery from plasma was 90.2%
94.4%
101.2%. The RSD of within day and between day was less than 9.0%. A good linearity was found in the range of 0.01~1.38 μmol·L-1 (r=0.999 7) and in the range of 1.38~103.5 μmol·L-1 (r=0.999 5).Conclusion: The method is simple
sensitive and accurate with wide linear dynamic range.