No. The formula of calculation depends on the level of your triglycerides. If your triglycerides value is under 174 mg/dl(4.5mmol/L), LDL = total cholesterol - HDL - triglycerides÷5. If your triglycerides value is above 174 mg/dl, then this formula may work better. LDL =0.8×(total cholesterol - HDL)-triglycerides ÷ 10. Please try to put your triglycerides value into the formula and get your LDL value.