Urine For Catecholamines

The urine catecholamine test measures catecholamines (epinephrine, norepinephrine, dopamine) and their breakdown products (metanephrines, vanillylmandelic acid) in a urine sample, typically a 24‑hour collection. It detects catecholamine‑secreting tumors (pheochromocytoma/paraganglioma), helps investigate unexplained high blood pressure and symptoms such as palpitations, headaches or sweating, and can monitor treatment. Certain medications and foods affect results.

To collect urine catecholamines, do a 24‑hour collection: discard the first morning void, note the start time, then collect every urine for the next 24 hours including the final void at the same time the next morning. Use the provided container (often with preservative), keep it refrigerated or on ice during collection, avoid advised foods/medications, and return the sample promptly to the lab.

Yes — catecholamine hormones (epinephrine, norepinephrine and dopamine) and their metabolites are excreted in urine. Clinical tests (often 24-hour collections) measure urinary catecholamines and metabolites such as metanephrines and vanillylmandelic acid to diagnose conditions like pheochromocytoma or assess sympathetic activity. Results can be affected by stress, medications, diet and collection timing, so proper preparation and collection are important.

Vanillylmandelic acid (VMA) is the main urinary metabolite of catecholamines (epinephrine and norepinephrine). A 24‑hour urine VMA test helps detect catecholamine‑secreting tumors such as pheochromocytoma or neuroblastoma; elevated VMA suggests increased catecholamine breakdown. Results depend on proper 24‑hour collection, dietary or medication interference, and laboratory reference ranges, so abnormal values usually prompt further testing.

A 5‑HIAA urine test measures 5‑hydroxyindoleacetic acid, the main breakdown product of serotonin, in a 24‑hour urine sample. It’s used to detect and monitor serotonin‑producing neuroendocrine (carcinoid) tumors that can cause flushing and diarrhea. Results help guide diagnosis and treatment monitoring. Patients should follow dietary and medication restrictions before and during collection to avoid false elevations.

Typical out‑of‑pocket costs for urine catecholamines (including 24‑hour collection/metanephrines) vary widely: in the US about $50–$300; in the UK testing is generally free on the NHS but private labs charge roughly £40–£150; in India about ₹300–₹2,000. Final price depends on test type, lab, whether it's 24‑hour, and insurance coverage—confirm with your provider or local lab.