OBJECTIVE: To study the relationship among the dosage, serum concentration and clinical effect of phenytoin
(PHT) in treating epileptic patients .METHODS: 130 steady -- state serum concentrations of PHT were determined by fluores-
cence polarization immunoassay(FPIA) in 70 patients with or without other drugs used in combination .RESULTS: The indi-
vidual difference among the patients who received routine dosage of PHT was very significant. Intoxication occurred ex-
t...