Abstract
Aim: A sensitive and selective LC-MS/MS method was validated for quantitation of ivermectin (IVM) in plasma. Method: The IVM was extracted from plasma using solid-phase extraction with C-18 cartridges. Separation of analytes was achieved on an ACE C18 column with isocratic elution using 0.1% acetic acid and methanol: acetonitrile (1:1, v/v) as mobile phase. The IVM was quantitated using electrospray ionization operating in negative multiple reaction monitoring mode. Results: The MS/MS response was linear over the concentration range from 0.1-1000ng/ml. The method for human plasma was validated as per US FDA guidelines. The LC-MS/MS method is sensitive, reproducible, has easy sample preparation and is suitable for IVM quantitation in clinical samples.
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