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Test 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, S

Specimen Type

Serum Red

Serum

Specimen Minimum Volume

0.25 mL

Specimen 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 day

Performing 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