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THEO
THEOPHYLLINE, SERUM

Test Code THEO 
Test THEOPHYLLINE, SERUM 
Methodology Immunoassay 
Description Theophylline and its congener, aminophylline, are used to relax smooth muscles of the bronchial airways and pulmonary blood vessels to relieve and prevent symptoms of asthma and bronchiospasms. 
Specimen Draw blood in either a plain, red-top tube or serum gel tube. Spin down and send 0.5 mL (0.3 mL minimum) of serum refrigerated. 
MMC Specimen Draw blood in a plasma gel tube.
0.5 mL of plasma required 
Reference Values Therapeutic concentration
Pediatric (apnea): 5.0 - 20.0 g/mL
Pediatric (asthmatic): 10.0 - 20.0 g/mL
Adults: 10.0 - 20.0 g/mL

Toxic concentration: > 20.0 g/mL 

Analytic Time 1 Day - Available STAT 
Day(s) Test Set Up Monday through Sunday 
CPT Code(s) 80198