Foot Circulation or Peripheral Arterial Function Test (e.g., Ankle-Brachial Index or Pulse Volume Recording)

Why It’s Done

Your doctor may recommend this test if you have symptoms like cold feet, slow-healing wounds, or pain in your legs when walking (claudication). It’s also used to check for risk factors like diabetes or high blood pressure that can affect circulation.

What to Expect Before the Test

You’ll likely lie down or sit comfortably while a blood pressure cuff is placed on your arms and legs. A device measures blood pressure or pulse waves in your ankles and arms to compare blood flow. No special preparation is needed, but avoid smoking or caffeine 30 minutes before.

Your doctor or technician will inflate the cuffs on your arms and ankles to measure blood pressure or changes in pulse volume. You may feel pressure or a brief discomfort, but it’s usually not painful.

The test takes about 15–30 minutes and provides a ratio (ankle-brachial index) or waveform patterns to assess circulation.

A normal result suggests healthy blood flow, while a lower ratio (below 0.9) may indicate reduced circulation, prompting further evaluation (e.g., imaging or lifestyle changes).

Results may guide treatment like exercise, medication, or vascular procedures if needed.