CATECHOLAMINES, 24-HOUR URINE

What this test checks

Measures total stress hormones over 24 hours.

Why do people get this test?

Used in suspected adrenal tumours causing high BP.

When you should consider this test

• Hard-to-control BP with episodes
• Suspected pheochromocytoma

How to prepare

24-hour urine collection. Avoid coffee, tea, chocolate, bananas, vanilla for 48 hours.