

The blood test for catecholamines checks the level of catecholamines in your blood. Catecholamines are hormones produced by the adrenal glands, which are found on top of the kidneys. They are released into the blood during times of physical or emotional stress.
The major catecholamines are dopamine, norepinephrine, and epinephrine (which used to be called adrenalin).
See also: Catecholamines - urine
Norepinephrine - blood; Epinephrine - blood; Adrenalin - blood; Dopamine - blood