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HelpTest Code THEO Theophylline, Serum or Plasma
Methodology
Enzyme Immunoassay (EIA)
Performing Laboratory
Huntsville Hospital Laboratory
Specimen Requirements
Container/Tube:
Preferred: Lithium heparin (light green-top)
Acceptable: Serum Gel
Draw blood, spin down and send 1 mL (pediatric: 0.2 mL) of plasma or serum.
Reference Values
Therapeutic concentration
Adults: 10-20 µg/mL
Critical value: >25 µg/mL
Day(s) Test Set Up
Monday through Sunday
CPT Coding
80198
Secondary ID
HHA1487
LOINC Coding
| Test Name | LOINC Code |
|---|---|
|
Theophylline, Serum or Plasma |
4049-3 |
Specimen Stability Information
|
Specimen Type |
Temperature |
Time |
|
Plasma,lithium heparin / Serum |
Refrigerated, spun |
7 days |
Reject Due To
|
Hemolysis |
Mild: |
ok |
Gross: |
ok |
|
Lipemia |
Mild: |
ok |
Gross: |
Reject |
|
Icterus |
Mild: |
ok |
Gross: |
ok |