Solid-phase extraction and high-performance liquid chromatography for therapeutic monitoring of haloperidol levels

This laboratory has developed a simple and efficient solid-phase extraction method that is combined with a high-performance liquid chromatographic method for rapid and precise therapeutic monitoring of haloperidol (Haldol) blood levels. The solid-phase extraction utilizes a mixed bed column. Sensitivity of the chromatographic method is 0.5 ng/ml (1.3 nM) of drug in serum, and separations can be performed in a 15-min chromatographic run. Advantages of this approach include enhanced speed, sensitivity, and efficiency. A high level of sensitivity may be achieved because of the absence of interferences from other drugs, metabolites, or serum components.