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HelpTest Code LAB35 Theophylline
AKA
Aminophylline, THEO-DUR
Specimen Type/Requirements
Red top (Serum w/out gel) tube - Serum
Gold top (Serum w/gel) tube - Serum
Light Green top (Lithium Heparin w/out gel) tube - Plasma
Draw 1 - 2 hours after dose for intermittent release.
Draw 5 - 9 hours after dose for sustained release.
Trough levels should be drawn 30 minutes prior to next scheduled dose.
Test is affected by gross hemolysis and gross lipemia.
Specimen Volume
| Preferred Volume | 1.0 mL |
|---|---|
| Minimum Volume | 0.4 mL |
Stability/Transport
| Room Temperature | Not Acceptable | |
|---|---|---|
| Refrigerated | 3 months | Preferred for transport |
| Frozen | 3 months |
Performed Test Frequency
Monday through Sunday
Methodology
Enzymatic
CPT
80198
Performing Lab
Sanford Laboratories Sioux Falls