There appears to be a discrepancy in the units of measurement in the article by Cordova and Cordova on their proposed new formula for LDL-cholesterol estimation

In the study of Cordova and Cordova ¹ the Friedewald formulae, quoted in the introduction, ‘LDL-c = total cholesterol – HDL-c – 0.2 × TG’, and in the results table, ‘LDL = TC – HDL – TG/5’, are the formulae for use when the units of measurement are mg/dL. However, the figures quoted for the patients’ results are in mmol/L and their proposed formula also uses mmol/L. It is not possible to determine whether the authors have made the mistake of applying the Friedewald formula for mg/dL to patient results in mmol/L.