Comparison of total and free phenytoin serum concentrations measured by high-performance liquid chromatography and standard TDx assay: Implications for the prediction of free phenytoin serum concentrations
Derivation and evaluation of an equation for prediction of free phenytoin concentration in patients co-medicated with valproic acid
Haidukewych D, Rodin EA, Zielinski JJ. Derivation and evaluation of an equation for prediction of free phenytoin concentration in patients co-medicated with valproic acid. Ther Drug Monit 1989;11:134-9.
Nomogram for the prediction of unbound phenytoin concentrations in patients on a combined treatment of phenytoin and valproic acid
May TW, Rambeck B, Nothbaum N. Nomogram for the prediction of unbound phenytoin concentrations in patients on a combined treatment of phenytoin and valproic acid. Eur Neurol 1991;31:57-60.
Unbound phenytoin plasma concentrations in patients comedicated with sodium valproate - The predictive value of plasma albumin concentration
Johnson GJ, Kilpatrick CJ, Bury RW, et al. Unbound phenytoin plasma concentrations in patients comedicated with sodium valproate - The predictive value of plasma albumin concentration. Br J Clin Pharmacol 1989;27:843-9.
Fluctuations of unbound and total phenytoin concentrations during the day in epileptic patients on valproic acid comedication
May TW, Rambeck B. Fluctuations of unbound and total phenytoin concentrations during the day in epileptic patients on valproic acid comedication. Ther Drug Monit 1990;12:124-8.