Cardiology Free

LDL Calculated

Friedewald equation for LDL cholesterol.

Enter Values

Total Cholesterol (mg/dL)

Range: 50 - 500

HDL (mg/dL)

Range: 10 - 150

Triglycerides (mg/dL)

Range: 10 - 1000

Score

Author William T. Friedewald et al.

First Published 1972

Evidence Standard clinical practice

Category Cardiology

Original Study Estimation of the concentration of LDL cholesterol in plasma (Clin Chem, 1972)

About The Friedewald equation estimates LDL cholesterol from total cholesterol, HDL, and triglycerides (LDL = TC - HDL - TG/5).

Clinical Use Valid in fasting samples with triglycerides <400 mg/dL. Use direct LDL measurement in type III dyslipidemia or very high TG.