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HelpTest Code THEO Theophylline
Useful For
Assessing and adjusting dosage for optimal therapeutic level
Assessing toxicity
Method Name
Enzyme-Multiplied Immunoassay Technique (EMIT)
Reporting Name
Theophylline, SSpecimen Type
Serum RedSerum
Specimen Minimum Volume
0.25 mLSpecimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum Red | Refrigerated (preferred) | 14 days |
| Ambient | 14 days | |
| Frozen | 14 days |
Reference Values
Therapeutic
Children and adults: 8.0-20.0 mcg/mL
Neonatal apnea: 6.0-11.0 mcg/mL
Toxic concentration: ≥20.0 mcg/mL
Day(s) Performed
Test performed daily
Report Available
Same day/1 daySpecimen Retention Time
14 daysPerforming Laboratory
Mayo Medical Laboratories in Rochester
Test Classification
This test has been cleared or approved by the U.S. Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
80198
LOINC Code Information
| Result ID | Reporting Name | LOINC Code |
|---|---|---|
| 8661 | Theophylline, S | 4049-3 |