Friedewald Equation Calculator

Calculate LDL Cholesterol





Formula

To calculate the LDL Cholesterol (\(LDL\)):

\[ LDL = TC - HDL - \left( \frac{TG}{5} \right) \]

Where:

What is LDL Cholesterol?

LDL cholesterol, often referred to as “bad” cholesterol, is a type of lipoprotein that carries cholesterol through the bloodstream. High levels of LDL cholesterol can lead to plaque buildup in arteries, increasing the risk of heart disease and stroke. The Friedewald equation provides a way to estimate LDL levels when direct measurement is not available, which is particularly useful in routine health screenings.

Example Calculation 1

Let's assume the following values:

Using the formula:

\[ LDL = 200 - 50 - \left( \frac{150}{5} \right) = 200 - 50 - 30 = 120 \]

The LDL Cholesterol is 120 mg/dL.

Example Calculation 2

Let's assume the following values:

Using the formula:

\[ LDL = 250 - 60 - \left( \frac{200}{5} \right) = 250 - 60 - 40 = 150 \]

The LDL Cholesterol is 150 mg/dL.