LDL Calculator
Low density lipoprotein
How do we count LDL level?
According to Friedewald the low-density lipoprotein level is:
LDL = total cholesterol – HDL - (TG/5)
All concentrations are given in mg/dl.
The quotient (TG/5) is used to estimate the VLDL (Very Low Density Lipoprotein) level.
The Friedewald equation limitations
This equation should not be used when:
- high level of chylomicrons is present
- plasma triglyceride concentration exceeds 400 mg/dl
- dysbetalipoproteinemia (type III hyperlipoproteinemia) is present.
In these circumstances LDL level should be measured directly.
How to interpret the obtained value?
Check your level of LDL against the chart below to interpret results.
| LDL [mg/dl] | Interpretation |
| <100 | Optimal LDL cholesterol, corresponding to a reduced risk of heart disease |
| 100 - 129 | Near optimal LDL level |
| 130 - 159 | Borderline high LDL level |
| 160 - 189 | High LDL level |
| >190 | Very high LDL level, corresponding to a highly increased risk of heart disease |
A few practical remarks
If your LDL level is too high try to modify your lifestyle and composition of your meals. If this approach does not work, ask your doctor for help.
If you suffer from atherosclerosis, the suggested LDL level is <70 mg/dl.
Use our LDL calculator to determine your "bad" cholesterol level.
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