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Coronary Angiography (with contrast imaging)

Published: August 9, 2026Updated: August 16, 2026

This procedure involves injecting a dye into your blood vessels to visualize blood flow and identify blockages in your coronary arteries using X-ray imaging.

Quick summary

["A diagnostic test to check for blockages in your heart’s blood vessels."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
8808-8
Short code
LV EF Angiogram
Synonyms
LV EF Angiogram
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
angiogram
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What to Expect Before the Procedure

You’ll likely need to fast for several hours before the test, avoid smoking, and may be given a sedative to relax. Your doctor will explain how to prepare, including any medications to stop.

During the Procedure

A catheter is inserted into a blood vessel (usually in your arm or groin), and a contrast dye is injected. X-ray images capture how blood flows through your coronary arteries, helping detect narrowing or blockages.

Aftercare and Recovery

You’ll be monitored closely in a recovery area for a short time before going home. Avoid strenuous activity for 24 hours, and contact your doctor if you experience chest pain, heavy bleeding, or signs of infection.

Why This Test Is Done

Coronary angiography is used to diagnose heart conditions like coronary artery disease, evaluate the results of a heart attack, or guide decisions about treatments such as angioplasty or bypass surgery.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: This test provides critical information about blood flow to your heart muscle, helping doctors determine the best course of treatment for conditions like blockages or reduced blood supply.

Frequently asked questions

What does an angiogram show?
It shows detailed images of your coronary arteries, allowing doctors to see if there are any blockages or narrowing that could restrict blood flow to your heart.
How long does it take to get results?
Results are typically available immediately after the procedure, but your doctor will discuss them with you during or shortly after the test.
Is this test painful?
You may feel some discomfort or pressure during the procedure, but you’ll be given medication to keep you comfortable. Most people describe it as mild to moderate pain, similar to a dental procedure.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy