circulation screening test preparation
Informed by recognized medical guidance
Overview
A circulation screening test checks for problems with blood flow in your legs or other parts of your body. It is a painless, non-invasive test that usually requires very little preparation. This article explains what you need to know to get ready.
Key facts
- You do not need to fast for this test, but you may be asked to avoid smoking and caffeine for a few hours beforehand.
- Wear loose, comfortable clothing so the technician can access your arms and ankles easily.
- The test takes about 10–15 minutes and you can return to your normal activities right after.
This test is commonly used to screen for peripheral arterial disease (PAD), a condition that affects millions of people worldwide.
It is often recommended for people who are over 50, smoke, have diabetes, high blood pressure, high cholesterol, or a family history of circulation problems.
Symptoms
- Sudden, severe leg pain
- A leg that turns pale, blue, or feels cold to the touch
- Inability to move the leg or foot
- ⚠Leg pain that comes on suddenly and does not go away
- ⚠A sore on your leg or foot that is getting worse or not healing
Common symptoms
- Leg pain or cramping when walking that goes away with rest
- Numbness or tingling in the legs or feet
- Coldness in one leg or foot compared to the other
Symptoms in children
- Unusual leg pain or fatigue during activity
- Poor growth in one leg
Symptoms in older adults
- Leg pain at night that makes it hard to sleep
- Sores on the legs or feet that heal slowly
Causes
Main causes
- Peripheral arterial disease is usually caused by a buildup of fatty deposits (atherosclerosis) in the arteries.
- Other conditions like diabetes, high blood pressure, and smoking can damage arteries.
- In some cases, inflammation or blood clots can block blood flow.
Risk factors
- Smoking
- Diabetes
- High blood pressure
- High cholesterol
- Obesity
- Over age 50
- Family history of heart or blood vessel disease
When to see a doctor
See a doctor urgently if:
- If you have sudden, severe leg pain or a leg that becomes pale or cold, seek emergency care.
Book a routine appointment if:
- If you have leg pain when walking that goes away with rest, make an appointment with your GP.
- If you have a non-healing sore on your leg or foot, see your doctor.
Diagnosis
The main screening test is called the ankle-brachial index (ABI). Your doctor measures your blood pressure in your ankle and your arm using a small ultrasound device. The results are compared to see if there is a blockage.
Tests that may be done
- Ankle-brachial index (ABI)
- Doppler ultrasound
- Pulse volume recording
What to expect at your appointment
You will lie on a table while a technician places blood pressure cuffs on your arms and ankles. They will take measurements at rest and sometimes after a short walk. The test is painless and takes about 15 minutes.
Treatment
If the test shows reduced blood flow, your doctor will talk to you about managing your risk factors and improving your circulation.
Self-care at home
- Walk regularly to help improve blood flow
- Quit smoking if you smoke
- Manage diabetes, blood pressure, and cholesterol with your healthcare team
Medical treatments
Your doctor may recommend medicines to lower your cholesterol, control blood pressure, or prevent blood clots. Always take medicines as prescribed.
When is surgery considered?
In more serious cases, a procedure such as angioplasty (opening a blocked artery with a small balloon) or bypass surgery may be needed. Your specialist will explain the options.
Living with this condition
If you have circulation problems, it's important to take good care of your feet – check them daily for sores or changes in colour. Wear comfortable shoes and keep your feet clean and dry.
Lifestyle tips
- Stay active with walking or other low-impact exercises
- Eat a healthy diet low in saturated fat and salt
- Maintain a healthy weight
Diet and exercise
A diet rich in fruits, vegetables, whole grains, and lean proteins can help control risk factors. Aim for at least 30 minutes of moderate activity most days.
Mental health and emotional wellbeing
Living with a chronic condition can be stressful. It's normal to feel worried or frustrated. Talk to your doctor or a counsellor if you need support.
Prevention
You cannot always prevent circulation problems, but you can lower your risk by making healthy lifestyle choices.
Screening programmes
Regular circulation screening tests can help find problems early, especially if you have risk factors. Talk to your doctor about how often you should be tested.
Complications
If left untreated
- Worsening leg pain and difficulty walking
- Non-healing sores or ulcers on the legs or feet
- Gangrene (tissue death) that may require amputation
Long-term outlook
With early detection and proper management, most people with circulation problems can lead full, active lives. Treatment can greatly improve symptoms and reduce the risk of serious complications.
Find support
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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.
Related conditions
Sources and guidance
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.
Guidance may differ by country or region. Confirm local recommendations with a qualified healthcare provider.