MPO and triple-A syndrome: An increase in the concentration of both markers was found in the PAD vs. healthy group as well, albeit less pronounced than for the two AAA groups: MPO 11.74 ng/mL (IQR 4.93) vs. 9.16 ng/mL (IQR 7.06); D-dimer 0.58 μg/mL (IQR 0.55) vs. 0.38 μg/mL (IQR 0.51).