Schwenk R, Kelly K, Tse K S, Sehon A H
Clin Chem. 1975 Jul;21(8):1059-62.
A sensitive radioimmunoassay is described, for measuring isoniazid in therapeutic and subtherapeutic concentrations. This radioimmunoassay was used in an exploratory clinical study to measure, as a function of time, the concentration of this drug in plasma of patients receiving isoniazid therapy.