Only a few reports have reported FABP4 levels in PAD-T2DM patients, such as lower FABP4 levels in T2DM (10.3 ± 7.59 ng/mL) compared to PAD-T2DM (23.34 ± 15.27 ng/mL), although no healthy controls were included in the study [22]. Here, FABP4 is linked to peripheral arterial disease.