Rapid and simple high-performance liquid chromatographic assay for the determination of metformin in human plasma and breast milk.
A rapid and simple high-performance liquid chromatographic (HPLC) assay for the determination of metformin in human plasma and breast milk is described. After proteins were precipitated with acetonitrile, metformin and the internal standard buformin were resolved on a cation-exchange column and detected by UV detection at 236 nm. Standard curves were linear over the concentration range 20.0-4000 microg/l. Intra- and inter-day coefficients of variation were <9.0% and the limit of quantification was around 20 microg/l.
Zhang
Mei
M
Department of Clinical Pharmacology, Christchurch Hospital, New Zealand. mei.zhang@cdhb.govt.nz
Moore
Grant A
GA
Lever
Michael
M
Gardiner
Sharon J
SJ
Kirkpatrick
Carl M J
CM
Begg
Evan J
EJ
D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D006801:Humans; D007004:Hypoglycemic Agents / Q000032:analysis* / Q000097:blood; D008687:Metformin / Q000032:analysis* / Q000097:blood; D008895:Milk, Human / Q000737:chemistry*; D012015:Reference Standards; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013056:Spectrophotometry, Ultraviolet
D007004:Hypoglycemic Agents; D008687:Metformin