24 HOUR URINE NOR METANEPHRINE

You should get a 24-hour urine normetanephrine test if you have episodes of severe headache, sweating, palpitations, anxiety, or tremors, or high blood pressure that is hard to control or occurs in spells. It is also recommended for an adrenal mass on a scan, a family history of pheochromocytoma or related genetic syndromes, and post-surgery monitoring.

For a 24-hour urine normetanephrine test, avoid caffeine, alcohol, smoking, and strenuous exercise for 2–3 days before and during collection. Inform your doctor about antidepressants, decongestants, levodopa, or blood pressure medicines, but don’t stop them without advice. Collect all urine for 24 hours in the provided container, keeping it refrigerated, and avoid stress.

No, fasting is not required for a 24-hour urine normetanephrine test. You can eat normally, but avoid caffeine, alcohol, and smoking for 2–3 days before and during the collection, as they can affect results. Also avoid stress and strenuous exercise, and collect every urine sample over the full 24 hours.