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Cardiology
Calculate total cholesterol/HDL ratio and triglyceride/HDL ratio from a standard lipid panel. A total/HDL ratio below 3.5 is optimal. For full cardiovascular risk assessment, use [ASCVD Risk Calculator](/tools/ascvd-risk) or [Framingham Risk Score](/tools/framingham-risk).
Formula
Total/HDL Ratio = Total Cholesterol ÷ HDL | TG/HDL Ratio = Triglycerides ÷ HDL | Non-HDL = Total Cholesterol − HDL
Inputs
Cardiology
Calculate LDL cholesterol from total cholesterol, HDL, and triglycerides using the Friedewald equation. Also reports non-HDL and total/HDL ratio.
Formula
Friedewald: LDL = Total Cholesterol - HDL - (Triglycerides/5), mg/dL
Inputs