Catecholamines (blood: adrenaline, noradrenaline, dopamine)
This test is done to measure catecholamine hormone levels circulating in the blood. These hormones are released by the adrenal glands and play a key role in stress response, blood pressure, and heart rate regulation. Abnormal levels may suggest conditions such as pheochromocytoma, neuroblastoma, or other disorders affecting the adrenal or autonomic nervous system.