LDL / HDL
The ratio of LDL to HDL cholesterol — a focused cardiovascular risk indicator.
What is it
The LDL/HDL ratio compares atherogenic LDL cholesterol to protective HDL cholesterol. It is calculated from the standard lipid panel.
Why it's measured
This ratio has been studied as a cardiovascular risk indicator, often considered alongside ApoB and ApoB:ApoA-I.
Reference range
Standard laboratory reference
< 3.0 ratio
Reference ranges vary by laboratory. Your individual reference range will appear on your test report and should be interpreted by your physician in the context of your overall health profile.
What results may indicate
Elevated
Has been associated with elevated cardiovascular risk in published research.
Lower
Is generally considered favorable.
These associations are general. They are not a personal diagnosis or prediction. Discuss your individual results with your physician in the context of your full health profile.
When it's measured
Calculated from standard cholesterol panel components.
Related markers
Measured in
A complete look at your heart, hormones, metabolism, inflammation, and longevity systems — drawn at Quest or LabCorp, reviewed by a U.S.-licensed physician.
Explore the Apex Panel →This information is for general educational purposes only and is not medical advice. Lab results alone are not intended to diagnose, treat, or cure any condition and do not replace the advice of a healthcare provider. OPTML does not offer medical advice, a diagnosis, medical treatment, or any form of medical opinion.