Clinical Chemistry
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Clinical Chemistry 26: 147-149, 1980;
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Clinical Chemistry, Vol 26, 147-149, Copyright © 1980 by American Association for Clinical Chemistry

Measurement of sodium valproate in serum by direct-insertion chemical- ionization/mass spectrometry

GM Schier, IE Gan, B Halpern and J Korth

To quantitatively determine sodium valproate, we use a stable isotope- labeled internal standard and chemical-ionization/mass spectrometry, without prior chromatographic separation. The technique is rapid, simple, sensitive, and provides for the routine analysis of 100 microL of serum with good within-day and day-to-day precision. The technique also allows for the simultaneous determination of phenobarbital, mephobarbital, carbamazepine, primidone, and phenytoin.




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Copyright © 1980 by the American Association for Clinical Chemistry.