Clinical Chemistry
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Clinical Chemistry 22: 769-771, 1976;
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Clinical Chemistry, Vol 22, 769-771, Copyright © 1976 by American Association for Clinical Chemistry

Simultaneous gas-chromatographic analysis for phenobarbital, diphenylhydantoin, carbamazepine, and primidone in serum

CV Abraham and HD Joslin

We describe a simple, sensitive determination of phenobarbital, diphenylhydantoin, carbamazepine, and primidone in serum, by use of gas- liquid chromatography with temperature programming. The methylated derivatives of these anticonvulsants are well resolved, as was 5-(p- methyl-phenyl)-5-phenylhydantoin, the internal standard. The proposed procedure requires only 0.20 ml of serum and can be done in less than 30 min. The lower limit of detection for each of the drugs is 0.5 mg/liter. Analytical recoveries of drug from serum were excellent and peak height and concentration were linearly related up to twice the toxic concentration for serum.




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Copyright © 1976 by the American Association for Clinical Chemistry.