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Theophylline
Test CodeLAB35
CPT Codes
80198
Preferred Specimen
1 mL serum collected in a red-top tube (no gel)
Minimum Volume
1 mL Plasma
Transport Temperature
Room Temperature
Specimen Stability
Room temperature: 8 hours
Refrigerated: 48 hours
Frozen: 3 months
Refrigerated: 48 hours
Frozen: 3 months