Enzyme immunoassay of phenobarbital, phenytoin, primidone, carbamazepine and theophylline with the Abbott VP Bichromatic Analyzer

The enzyme multiplied immunoassay technique (EMIT) for the assay of phenobarbital, phenytoin, primidone, carbamazepine and theophylline was adapted to the Abbott VP Bichromatic Analyzer. Reagent consumption is reduced by the use of a stable working dilution of EMIT reagent B in EMIT buffer. Correlation with the standard EMIT method is excellent. This procedure greatly increases the maximum number of tests per kit. The method is an accurate and economical alternative to the standard EMIT method.

Enzyme immunoassay of theophylline with the Abbott ABA-100

The enzyme immunoassay of theophylline using the "EMIT" reagents was adapted to the Abbott ABA. The method greatly increases the maximum tests per kit. The correlation with high pressure liquid chromatography was 99%. No interference with bilirubin was found at 15 mg/dl. of total bilirubin. The method is useful for pediatric patients including newborns.