Ankle-Brachial Index (ABI)
The Ankle Brachial Index (ABI) is the ratio of the blood pressure in the lower legs to the blood pressure in the arms.
Compared to the arm, lower blood pressure in the leg is an indication of blocked arteries (peripheral vascular disease).
This test is ordered by your doctor and may be indicated in various chronic illnesses where circulation is affected (eg Diabetes and Chronic leg ulcers).
If found to be outside of the normal range, further investigations may be required.