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Theophylline
MessagePerforming Lab: Regions
Test Code
0206
Alias/See Also
Sunquest: THEO
CPT Codes
80198
Includes
Time of Last Dose; Theophylline
Preferred Specimen
0.2 mL Lithium Heparin Plasma (light green-top) tube
Minimum Volume
0.1 mL
Other Acceptable Specimens
Serum (gold-top, red-top, red/gray-top), Lithium Heparin (light green-top) on ICE
Transport Temperature
Refrigerated
Specimen Stability
Room Temperature: 7 days
Refrigerated: 7 days
Frozen: 60 days
Refrigerated: 7 days
Frozen: 60 days
Methodology
Two-Point Rate slide
Setup Schedule
Daily
Report Available
Same Day
Reference Range
10 - 20 mcg/mL
Clinical Significance
Theophylline is a drug used in the treatment of asthma. Theophylline is an effective bronchodilator. The therapeutic and toxic effects of theophylline are related to the plasma concentrations of the drug. Theophylline measurements are used to monitor patient compliance and therapy and to diagnose potential overdose. Toxic effects include nausea, vomiting, diarrhea, headache, tachycardia, arrhythmias, and convulsions.
