Lotner, G Z Use of Seralyzer system for theophylline level determination in an office setting. [electronic resource] - Annals of allergy Sep 1985 - 454-7 p. digital Publication Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't ISSN: 0003-4738 Subjects--Topical Terms: Blood Specimen CollectionChromatography, High Pressure LiquidHumansPhotometry--methodsReagent Kits, DiagnosticTheophylline--blood