VLDL Calculator

What is VLDL Cholesterol?

Very Low-Density Lipoprotein (VLDL) is a major type of lipoprotein particle produced primarily by the liver to distribute endogenous triglycerides to peripheral tissues and muscle cells. Like low-density lipoprotein (LDL), VLDL particles carry apolipoprotein B-100 and contribute to the formation of atherogenic plaques in arterial walls.

Because direct measurement of VLDL requires specialized laboratory techniques such as preparative ultracentrifugation or nuclear magnetic resonance (NMR) spectroscopy, clinical lipid panels routinely estimate VLDL concentration using the established relationship between blood triglycerides and VLDL particles.

How VLDL is Calculated

In standard clinical practice, VLDL cholesterol is estimated from serum triglycerides using the Friedewald linear equation:

When measurements are in SI units (millimoles per liter, mmol/L):

For example, if fasting blood triglycerides are 150 mg/dL, estimated VLDL is \(150 / 5 = 30\text{ mg/dL}\). In SI units, 1.70 mmol/L of triglycerides yields \(1.70 / 2.2 \approx 0.77\text{ mmol/L}\) of VLDL cholesterol.

Clinical Reference Ranges & Interpretation

Clinical Limitations

The linear triglyceride-to-VLDL conversion is accurate when triglycerides are below 400 mg/dL (4.52 mmol/L). In patients with severe hypertriglyceridemia, chylomicrons alter the triglyceride ratio, rendering linear estimation inaccurate. In such cases, direct LDL/VLDL measurement is indicated.

You can also assess overall cardiac risk markers using our LDL Calculator, evaluate lipid ratios with the Cholesterol Ratio Calculator, or convert between unit systems using the Cholesterol Units Converter.