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Theophylline Level
Test CodeTHEO
CPT Codes
80198
Preferred Specimen
Dark green lithium heparin tube
Minimum Volume
fill tube 3.5 mL
Instructions
Collect specimen in dark green lithium heparin tube and refrigerate.
Specimen Stability
1 week capped at 2-8 oC
60 days capped at -20 oC
60 days capped at -20 oC
Setup Schedule
Every day
Reference Range
10-20 ug/mL
Performing Laboratory
Marietta Memorial Hospital laboratoy