The serum level of CRP was 8.95 (5.04–14.34) mmol/l in the group with T2DM (BMI > 40 kg/m2) and 13.4 (9.9–15.99) mmol/l in the group without T2DM (BMI > 40 kg/m2), exceeding the values in the control group of 4.41 (3.12–5.38) mmol/l (p < 0.05). Here, CRP is linked to type 2 diabetes mellitus.