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Clinical Chemistry 24: 710-713, 1978;
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Clinical Chemistry, Vol 24, 710-713, Copyright © 1978 by American Association for Clinical Chemistry

Comparative determination of phenytoin by spectrophotometry, gas chromatography, liquid chromatography, enzyme immunoassay, and radioimmunoassay

A Castro, J Ibanez, JL DiCesare, RF Adams and H Malkus

Sera from patients being treated with phenytoin were analyzed for the drug by spectrophotometry, gas chromatography, radioimmunoassay, enzyme immunoassay, and liquid chromatography. The essay values obtained were intercompared statistically. Enzyme immunoassay and liquid chromatography appear to be attractive alternatives to the more traditional methods of spectrophotometry and gas chromatography. Our radioimmunoassay data correlated poorly with results by the four other methods.




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Copyright © 1978 by the American Association for Clinical Chemistry.