Why get tested?To help diagnose or rule out a
pheochromocytoma
When to get tested?When you have persistent or episodic high blood pressure and symptoms such as headaches, rapid heart rate, and sweating
Sample required?A blood sample drawn from a vein in your arm
Note: Preparation for the test is important for accurate results. You should
discontinue epinephrine and epinephrine-like drugs for at least 1 week
before the test, stop using acetaminophen 48 hours beforehand, and fast
for 8-10 hours prior to collection. It is especially important not to
have any caffeine containing food (soda, chocolate), coffee (including
decaf), tobacco (smoking cigarettes or cigars), tea, or alcohol for at
least 4 hours before specimen collection. Talk to your doctor about
all the medications you are taking as well since several different drugs may
interfere with the test.
