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.