<p>Doppler Ankle Brachial Pressure Index (ABPI) is the recommended method of arterial screening when assessing patient eligibility for compression therapy. However, in this paper, Janice Bianchi details the potential shortcomings of this technique and describes a newer, simpler test using a pulse oximetry Lanarkshire Oximetry Index which has been shown to be a feasible way to assess whether compression can safely be applied in patients with leg ulcers.</p>