Diagnostics·Diagnostics
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Varicose veins are swollen, twisted veins that you can see just under the surface of your skin. They usually happen in the legs. A blood test is not used to diagnose varicose veins directly. Instead, your doctor may order a blood test to check for other health problems that could be causing your symptoms or making the veins worse.
Key facts
Yes, varicose veins are very common. About 1 in 3 adults will have them at some point in their lives.
They can affect anyone, but are more common in women, people over 50, those who are pregnant, have a family history, or stand for long periods.
Your doctor will first look at your legs and ask about your symptoms. They may also feel the veins. The main test is an ultrasound scan (duplex ultrasound) which uses sound waves to see how blood flows in your veins. A blood test is not needed for varicose veins themselves, but your doctor might order one to check for other things like a blood clotting disorder, inflammation, or thyroid problems.
During a blood test, a small sample will be taken from your arm. It is quick and usually causes just a brief pinch. Your doctor will explain why the test is needed and what the results mean.
Treatment for varicose veins focuses on relieving symptoms, preventing complications, and improving the appearance. Many people need only self-care measures. When symptoms are bothersome, medical procedures can close or remove the affected veins.
Most people with varicose veins can live comfortably with simple habits. Wear compression stockings if prescribed, keep moving, and elevate your legs when you can. Protect your legs from injury and check for any changes in your skin.
Eat a balanced diet with plenty of fibre to prevent constipation (which can worsen vein pressure). Avoid high-salt foods that can cause fluid retention. Regular exercise, especially walking, improves circulation in your legs.
You may not be able to prevent varicose veins, especially if they run in your family. However, you can reduce your risk by staying active, keeping a healthy weight, avoiding long periods of standing or sitting, and wearing compression stockings if you are at high risk (for example, during pregnancy).
There is no routine screening test for varicose veins. If you notice changes or symptoms, see your doctor.
For most people, varicose veins are a minor issue. With self-care and, if needed, medical treatment, symptoms usually improve. Serious complications are rare, and modern treatments are very effective and safe.
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Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: July 16, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.
Medical treatments include procedures that close off the faulty vein so blood reroutes to healthy veins. These can be done with heat (laser or radiofrequency ablation), a foam injection (sclerotherapy), or a small cut to remove the vein (phlebectomy). Your doctor will discuss which option is best for you based on your specific situation.
Surgery (vein stripping) is less common now but may be recommended if other treatments are not suitable or if the veins are very large.
Varicose veins can affect how you feel about your appearance, which may lower your self-esteem. It is normal to feel self-conscious. Talking to a doctor or a counsellor can help. Remember that they are very common and usually treatable.