Metanephrines (Plasma)
The Plasma Metanephrines test measures metanephrines in the blood, which are breakdown products of adrenaline and noradrenaline. These hormones are released by the adrenal glands and play a key role in regulating blood pressure, heart rate, and the body’s response to stress.
This test is primarily used to investigate suspected pheochromocytoma or paraganglioma, rare tumours that produce excess catecholamines. Such tumours can cause episodic or persistent symptoms including high blood pressure, headaches, palpitations, sweating, and anxiety.
Plasma metanephrines are considered a sensitive marker for these conditions because metanephrines are produced continuously, even when hormone release is intermittent.
Accurate testing requires careful preparation and interpretation. Certain medications, stress, and posture can influence results, which is why results are reviewed in conjunction with clinical history and further testing if required.
Early detection of catecholamine-producing tumours is important, as appropriate treatment can significantly improve outcomes.
- Price: £249
- Code: META
- TAT: 10 Working Days
- Sample Type: Blood
What is this test used for?
It is used to investigate rare adrenal tumours that produce excess stress hormones.
Who should consider this test?
Individuals with unexplained or difficult-to-control high blood pressure or characteristic symptoms may benefit.
What do the results mean?
Elevated levels suggest excess catecholamine production and require specialist follow-up.
Do I need to prepare the test?
Specific preparation instructions may be provided at booking.
FAQs
When will I receive my results?
Results are usually available within the stated turnaround time.
Should I discuss my results with a doctor?
Yes, results should always be reviewed with a qualified healthcare professional.
Why Choose Marylebone Diagnostic Centre?
At Marylebone Diagnostic Centre, we provide specialist diagnostic testing with a strong focus on clarity, patient reassurance, and clinical relevance. Our experienced clinical team ensures careful sample collection and clear communication throughout your testing journey.
We help you understand what your results mean and how they fit into your wider health picture, supporting informed decisions about next steps.
Book Now
Take a proactive step towards understanding your health by booking your Metanephrines (Plasma) test with Marylebone Diagnostic Centre today.










