The LDL-C/apoB ratios of the entire group of patients ranged from 0.622 to 1.694 (mean ± SD: 1.223 ± 0.146, and the LDL-C/apoB ratio ranges according to group were: CAD (+) DM (+) group, 0.622–1.408 (1.153 ± 0.133); CAD (+) DM (−) group, 0.868–1.458 (1.171 ± 0.129); CAD (−) DM (+) group, 0.779–1.525 (1.203 ± 0.124); and CAD (−) DM (−) group, 0.692–1.694 (1.250 ± 0.150)). Here, APOB is linked to coronary artery disorder.