Pheochromocytoma Evaluation
11 days
Metanephrines: liquid chromatography/tandem mass spectrometry (LC/MS-MS), creatinine: alkaline picric acid
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Panel combining plasma and urine metanephrines. Gold standard for pheochromocytoma diagnosis.
Urine (first morning)
10 mL
Random urine transport tube with no preservative or 6N HCl.
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
This test does not require any special collection or pre-analytical handling. Follow routine specimen collection protocols.
| Temperature | Period |
|---|---|
| Room temperature | 7 days |
| Refrigerated | 14 days |
| Frozen | 14 days |