• Fasting for 8–12 hours may be required, depending on whether the test is performed on blood or urine samples.
• Avoid caffeine, alcohol, nicotine, and certain foods (such as chocolate, bananas, and vanilla) for at least 24 hours before the test, as they may influence results.
• Inform the laboratory team about all medications you are taking, including antidepressants, blood pressure medications, or decongestants, as these may affect catecholamine levels.
• Avoid stress, heavy exercise, and emotional strain before testing, as these can temporarily increase hormone levels.
• Follow specific instructions if a 24-hour urine collection is required.
• Carry your doctor’s prescription and valid ID proof at the time of testing.

The Catecholamines test measures the levels of hormones produced by the adrenal glands that help regulate the body’s “fight or flight” response. These hormones are released in response to stress and play a vital role in maintaining blood pressure, heart function, and energy metabolism.

Doctors commonly recommend the Catecholamines test to:

• Diagnose adrenal gland tumors such as pheochromocytoma or paraganglioma
• Investigate unexplained high blood pressure
• Evaluate symptoms such as rapid heartbeat, sweating, anxiety, or headaches
• Monitor treatment response in adrenal disorders
• Assess hormone-related imbalances

The test may be performed using a blood sample or a 24-hour urine collection, depending on clinical requirements. Blood testing involves collecting a small sample from a vein, while urine testing requires collecting all urine over 24 hours. Both methods are safe and provide valuable diagnostic information.

Elevated catecholamine levels may indicate adrenal tumors or excessive hormone production, while abnormal patterns may help identify underlying endocrine disorders. Results are interpreted alongside clinical findings and additional imaging or laboratory tests.