The most important tools in diagnosing varicose veins are the physical examination and medical history. Varicose veins are typically diagnosed based on their appearance, and no other special tests are needed to confirm the diagnosis.

If a problem with the deep veins or complications are suspected based on your symptoms and exam, other tests may be done.

If you are considering varicose vein surgery or sclerotherapy, further testing can help pinpoint the location of the vein problem so that treatment will have the best chance of success.

• Duplex Doppler ultrasound is the most commonly used noninvasive test that can help your doctor study blood flow in your leg veins.
• Venogram may be done to assess complications of varicose veins, such as those related to the deep veins. This test is rarely helpful in the diagnosis or treatment of varicose veins.