Ankle-Brachial Index (ABI)
Detects: Peripheral artery disease (PAD)
What it is
A painless comparison of blood pressure at your ankle versus your arm, using cuffs and a small probe, to detect narrowed leg arteries.
Where & when it’s offered
At clinics, vascular labs, and many cardiology practices.
Why it’s offered
PAD signals widespread atherosclerosis and higher heart-attack and stroke risk — and it's frequently silent.
When it’s routine
Considered for people with leg symptoms or higher vascular risk (older age, smoking, diabetes). Not a universal screen for everyone.
ABI — questions & answers
What does ABI detect?
Peripheral artery disease (PAD). A painless comparison of blood pressure at your ankle versus your arm, using cuffs and a small probe, to detect narrowed leg arteries.
Is the ABI test noninvasive?
Yes. At clinics, vascular labs, and many cardiology practices.
When should you get ABI screening?
Considered for people with leg symptoms or higher vascular risk (older age, smoking, diabetes). Not a universal screen for everyone.
Does Medicare cover ABI?
Often covered when medically indicated (symptoms or risk factors). Confirm with your provider.
Want a reminder when this is due?
Join Kardia Guard free — we’ll tell you when ABI fits your age and guidelines, and help you find a facility near you.