Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor provides Nuclear Stress?
A nuclear stress test is a heart test. A cardiologist usually orders it. Your regular doctor may order it first, then send you to a heart specialist if the test is needed. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What it is
A nuclear stress test shows how well blood flows to your heart, both when you are active and when you are resting. You will get a small injection of a tracer, a tiny amount of a radioactive substance that a special camera can see. The amount of tracer is very small and is considered safe for most people.
Why a doctor might recommend it
Doctors use this test to look for blocked or narrowed blood vessels that feed the heart. It can help explain chest pain, trouble breathing during activity, or an irregular heartbeat.
How to prepare
- Ask your doctor which of your medicines you should skip on the day of the test.
- Avoid caffeine for about a day before the test. This includes coffee, tea, soda, and chocolate.
- Do not eat or drink anything for a few hours before the test.
- Wear comfortable clothes and shoes that you can walk in.
- Tell your doctor if you are pregnant or breastfeeding.
What happens during it
First, a technician places small sticky pads on your chest to record your heart rhythm. You then get the tracer injection. Next, your heart is stressed, either by walking on a treadmill or by receiving a medicine that makes your heart act as if you are exercising. After that, you lie still under a camera while it takes pictures of your heart.
Recovery
Most people go home the same day and feel fine. Drinking water helps your body clear the tracer. Your doctor will usually get the results within a few days.
Risks and side effects
Serious problems are rare. Some people have chest discomfort, dizziness, or shortness of breath during the exercise part. The medicine used instead of exercise can cause flushing or nausea. The radiation from the tracer is very low.
Who performs it
A cardiologist or a trained heart imaging team usually runs the test in a hospital or an outpatient clinic. A doctor watches your heart rhythm the whole time.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance. A concierge doctor usually costs more and often works with insurance. They can listen to your symptoms, do an exam, and run basic heart checks in the office. If your symptoms suggest you need a nuclear stress test, they will refer you to a cardiologist. After the test, they can help you understand the results and manage ongoing care.
Common questions
Does the test hurt?
The tracer injection feels like any other shot. The exercise part can feel tiring, like a hard workout. It usually lasts only a few minutes.
How long does it take?
Plan for two to four hours at the clinic. Much of that time is waiting for the tracer to move through your body.
Can I drive home afterward?
Most people can drive themselves. If you received a stress medicine that makes you sleepy, you may need someone to drive you.
When will I get results?
A doctor reads the pictures and usually reports results within a few days. Ask your doctor's office when to expect a call.
Sources
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
