Theophylline, Serum Download Requisition Test Code THEO Description Collection/Transport Notes Testing performed at University of Colorado Hospital. Click here for more information. Test Detail Department Sendout Synonyms Elixophylline (Theophylline, Serum);Aminophylline (Theophylline, Serum) Result Interpretation Fees/Coding Licensing & Certification Search for Another Test: Search Text is Required. Search