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Theophylline
0090265
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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 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. Gel separator tubes are not acceptable, regardless of the tube additive.
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
Hotline History
Date of Change
Test Name Change
Methodology
Performance/Reported Schedule
Specimen Requirements
Reference Interval
Interpretive Data
Note
CPT Code
Component Change
Other Interface Change
New Test
Inactive
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
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