Diagnosis

Understanding Venogram

Choose a preferred language


A venogram is a type of imaging procedure. It uses X-rays and a special dye to look at veins in your body. The dye is called a contrast material. An X-ray is a picture of the inside of your body. Low levels of radiation create the image.


Why a venogram is done

A venogram is often done to find blood clots in the veins. It can help diagnose deep vein thrombosis. This is a blood clot in a deep vein, often in your legs. It's also done to find other problems related to the veins. These include varicose veins, a vein defect, or the narrowing of a vein.


How a venogram is done

This procedure is often done on an outpatient basis. That means you can go home afterward. During the procedure:

  • You will lie down on an exam table. The table may tilt to help the dye move through your body.
  • You may be given medicine, so you don't feel any pain.
  • A health care provider will put a catheter, or needle, into one of your veins. The location depends on which body part is being X-rayed.
  • They will inject the dye into your vein.
  • X-rays are taken as the dye moves through your body.
  • You may be asked to hold your breath during the procedure.


Risks of a venogram

  • Pain
  • Blood clots
  • Allergy to the dye
  • Kidney problems

Author: Semko, Laura

© 2000-2026 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
heart icon

Heart & Vascular

View our heart and vascular services.

Learn More
schedule icon

Schedule an Appointment

Find the right provider and schedule anytime.

View Providers
Related Articles
Read article
Heart Health
Understanding Temporal Artery Biopsy

During a temporal artery biopsy, the doctor will remove a small sample of tissue from one or both of your temporal arteries.

Read article
Heart Health
Carotid Angiography

Carotid angiography is a type of X-ray test used to view the carotid arteries. Read on to learn details about the test.

Read article
Heart Health
Ankle-Brachial Index Test

The ankle-brachial index (ABI) test compares the blood pressure in the upper and lower limbs. This test can help diagnose peripheral arterial disease (PAD).

Read article
Heart Health
Understanding Segmental Doppler Pressure Testing

Segmental Doppler pressure testing measures the blood pressure in an arm or a leg at certain points. It uses Doppler ultrasound. It is able to check blood flow in an artery.