Sign in →

Test Code THEO Theophylline

Performing Laboratory

General Hospital Laboratory             304-388-6244             
Greenbrier Valley Laboratory 304-647-6060

Specimen Requirements

Preferred: Plasma-Dark Green Lithium Heparin or Serum- red top

Acceptable: Plasma-Mint Green or Serum-SST gold top

Allow SST or red top to completely clot      

Spin and physically separate plasma/serum from contact with cells as soon as possible

4 mL of plasma/serum (minimum 2 mL)

Specimen Rejection

  • Improperly labeled, collected, stored, and transported
  • Quantity not sufficient

Storage and Stability

Room Temp 2 days (If separated from cells)
Refrigerated 2-8oC 1 month
Frozen <-20oC 3 months

Reference Values

10.0-20.0 ug/mL

Critical Value: >20.0 ug/mL

Methodology

Homogeneous Enzyme Immunoassay General
Two Point Rate Greenbrier 

Days Test Set Up and Turnaround

Monday through Sunday, Continuously 

AM Collection Expected by 9AM same day
Routine Expected within 24 hrs
Stat Expected within 1 hr
Timed Expected results are test dependant

CPT Coding

80198