A method for directin vivo measurement of drug concentrations from a single2H NMR spectrum

Abstract
The use of 2H-labeled drugs provides a measure of drug concentration in situ directly from a single 2H NMR spectrum obtained with any antenna by correcting only for differential saturation effects. The limit of detection for a drug labeled with three equivalent deuterons is roughly 0.5 mM. © 1989 Academic Press, Inc.