• Why is this test performed for patients with an adrenal incidentaloma?

It provides a rapid evaluation for patients who have an adrenal mass discovered incidentally during other imaging procedures.

• Is this test used for patients with a known genetic predisposition?

Yes, it is used to monitor patients with a strong family history of pheochromocytoma or those diagnosed with multiple endocrine neoplasia syndromes, such as MEN-2.

Medical Laboratories

Plasma Metanephrines Test

Plasma Metanephrine and Normetanephrine Test

A rapid, highly sensitive test measuring stress hormones directly in the blood for early detection of adrenal gland tumors causing severe blood pressure spikes.

Trusted medical contentUpdated: 04-09-2026Views: 134LHL-2307

Conditions and notices

8-12 hours fasting

Fasting: You must fast for 8-10 hours (only water is allowed). Do not smoke or drink coffee or caffeine on the morning of the exam.

Drawing position: You should rest and lie down in a comfortable position for 15-30 minutes immediately before drawing blood.

Avoid medications: Inform your doctor about all medications you are taking. Certain medications (such as antidepressants) may be required to be stopped for a period before the examination, but only under medical supervision.

Avoid stress: Physical or emotional stress should be avoided before the examination.

Frequently Asked Questions

Short answers to the FAQs published with this service.

• What is the clinical role of the plasma metanephrine test?

It serves as a sensitive screening tool for the initial assessment of suspected pheochromocytoma or other catecholamine-secreting tumors.

• When is the plasma test preferred over the 24-hour urine test?

It is often used when a rapid result is required or when a patient finds it difficult to accurately complete a 24-hour urine collection.

• What specific symptoms are associated with the need for this test?

Symptoms include severe or life-threatening hypertension, acute pounding headaches, excessive sweating, and unexplained palpitations.

• What preparation is required for the plasma metanephrine test?

Plasma Metanephrines Test

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