Theophylline - Timed (THEO TIMED)
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| Synonyms:
| Theolair, Theodur |
| Specimen: | Blood; (1) Red (no preservative) top vacutainer tube. If drawn in a SST (serum separator tube), remove serum from gel within one hour of collection.
Draw at the time designated by clinician. |
| Volume: | Full primary tube |
| Minimum Volume: | 200 microL serum |
| Collection: | Transfer serum to a tightly capped plasic aliquot tube for testing.
Refigerate at 2-8°C for 7 days. |
| Rejection Criteria: | Lithium heparin specimen; SST submitted for testing; improper labeling. |
| Reference Range: | Therapeutic range: 10-20 microg/mL Critical= greater than 20 microg/mL |
| Methodology: | |
| Test Use: | Quantitative measurement of
theophylline in human serum and plasma.
Used when MD wants a theophylline drawn not according to protocol. MD should specify the time that sample should be drawn. |
| Additional Information: | After administration, theophylline is rapidly and almost completely absorbed, with peak serum concentrations being reached in 2 to 3 hours. Toxic effects are usually concentration related and include nausea, vomiting, tachycardia, arrythmias, and convuls |
| Testing Includes: | Theophylline level |
| Testing Facility: | AnMed Laboratory |