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Tyrosine, plasma
| Item | Value | ||||||
|---|---|---|---|---|---|---|---|
| Approval req'd? | No | ||||||
| Available Stat? | No | ||||||
| Test code | TYRO | ||||||
| Performed by | Quest | ||||||
| Sendout? | Yes | ||||||
| Method | LCMS | ||||||
| Patient Preparation | Collect specimen after an overnight fast (or at least 4 hours after a meal) if possible. Non-fasting samples are acceptable for pediatric patients | ||||||
| Collection Instructions | Provide the patient's age and sex, a brief clinical history and tentative diagnosis, and a description of drug, infant formula or dietary therapy or X-rays in the previous three days. | ||||||
| Container type | Dark Green top | ||||||
| Amount to Collect | 1 mL blood | ||||||
| Sample type | Heaprinized plasma | ||||||
| Preferred volume | 0.4 mL plasma | ||||||
| Min. Volume | 0.2 mL plasma | ||||||
| Processing notes | Separate and immediately freeze plasma at -20C. Order Quest # 30791P | ||||||
| Units | µmol/L | ||||||
| Normal range |
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| Stability | Room temperature unacceptable, refrigerated 7 days, frozen at -20C 30 days | ||||||
| Turn around times | Set up at least 3x weekly. Turnaround time: 3-5 days. | ||||||
| CPT coding | 84510-90 | ||||||
| LOINC code | 20660-7 | ||||||
| Last Updated | 10/2/2010 11:52:46 AM | ||||||
| Entry Number | 992 |
If you have additional questions regarding this test, please call: 415-353-1667