🧈 LDL Cholesterol (Friedewald)
Calculate LDL cholesterol from a standard lipid panel using the Friedewald equation.
LDL Cholesterol (Friedewald)
Total cholesterol (mg/dL)
HDL cholesterol (mg/dL)
Triglycerides (mg/dL)
When to use
Derive LDL when not directly measured.
How it works
LDL = Total cholesterol − HDL − Triglycerides/5 (mg/dL). Invalid when TG > 400 mg/dL.
Key points
- Underestimates LDL at high TG and very low LDL.
- Use directly measured LDL if TG > 400 or type III dyslipidaemia.
- Treatment goals depend on overall cardiovascular risk.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.