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Theophylline
0090265
Ordering Recommendation
Mnemonic
THEO
Methodology
Enzyme Immunoassay
Performed
Sun-Sat
Reported
Within 24 hours
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
ARUP Consult®
Disease Topics
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


Note
Not recommended for treatment of neonatal apnea.
Components
Component Test Code*Component Chart NameLOINC
0090265Theophylline4049-3
* 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