From: Comparison common equations for LDL-C calculation with direct assay and developing a novel formula in Iranian children and adolescents: the CASPIAN V study
Researchers
Formulas
Friedwald
LDL = TC-HDL-(TG/5)
Ahmadi et al.
LDL = TC/1.19 + TG/1.9-HDL/1.1–38
Chen
LDL = (0.9 × TC)-(0.9× HDL)-(0.1 × TG)
Anandaraja
LDL = (0.9 × TC)-(0.9 × TG/5)-28
New formula
LDL = (0.97 × TC)-(0.93 × HDL)-(0.19 × TG)