The linear associations of log10-Lp(a) and eGFR were both found in nondiabetes (β = −0.77 ml/min/1.73 m2, 95% CI −1.47, −0.08, P = 0.03) and diabetes patients (β = −2.11, 95% CI −3.56, −0.66, P = 0.004). Here, LPA is linked to diabetes mellitus.