Ordering Recommendation
Detect overdose. Optimize drug therapy and monitor patient adherence.
Mnemonic
THEO
Methodology
Enzyme Immunoassay
Performed
Sun-Sat
Reported
Within 24 hours
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect
Plain red. Also acceptable: Green (sodium or lithium heparin).
Specimen Preparation
Separate serum from cells within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.2 mL)
Storage/Transport Temperature
Refrigerated.
Unacceptable Conditions
Lipemic specimens
Remarks
Lipemic specimens may cause an underestimation of Theophylline level
Stability
After separation from cells: Ambient: 8 hours; Refrigerated: 8 days; Frozen: 3 months
Reference Interval
0-5 months: 6.0-12.0 µg/mL
Toxic: 20.1 µg/mL or greater
6 months and older: 10.0-20.0 µg/mL
Toxic: 25.1 µg/mL or greater
Interpretive Data
Compliance Category
FDA
Note
Not recommended for treatment of neonatal apnea.
Hotline History
N/A
CPT Codes
80198
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0090265 | Theophylline | 4049-3 |
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
- Aminophylline
- elixophylin
- Elixophyllin
Theophylline