Dear Editor, We read with great interest the article: Comparison of Novel Martin/Hopkins and Sampson Equations for Calculation of Low-Density Lipoprotein Cholesterol in Diabetic Patients. The study compared the Martin/Hopkins (LDL-Cmh), Sampson (LDL-Cs), and Friedewald (LDL-Cf) equations with directly obtained low-density lipoprotein (LDL-Cd). The aim was to analyze which would have a greater agreement with LDL-Cd in diabetic patients and investigate how these new equations could change clinical decision-making compared to LDL-Cf. […]