How do metanephrine levels rule out pheochromocytoma?

The body breaks down adrenaline into metanephrines, and either 24 hour urine collection or plasma (blood) levels can rule in or out a pheochromocytoma. Many physicians feel that the 24 hour urine test is better than the plasma test because it has fewer false positives (fewer cases of a positive test in someone who does not have a pheochromocytoma).

Continue Learning about Endocrine System

Endocrine System

Your endocrine system works with your nervous system to control important bodily functions. The endocrine systems responsibilities include regulating growth, sexual development and function, metabolism and mood. The endocrine syst...

em also helps give your body the energy it needs to function properly. Endocrine glands secrete hormones into the bloodstream. Hormones are considered chemical messengers, coordinating your body by transferring information from one set of cells to another. Your endocrine system health can be affected by hormone imbalances resulting from impaired glands. A hormone imbalance can cause problems with bodily growth, sexual development, metabolism and other bodily functions. Endocrine system diseases or conditions include diabetes, growth disorders and osteoporosis.

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.