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Understand Medium LDL Particles

Medium LDL Particles

Heart & circulation markers

What the test generally measures, and what to ask about it.

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Updated Jul 13, 2026

What is Medium LDL Particles?

The mid-sized LDL (bad cholesterol) particles, counted by advanced lipoprotein testing.

Medium LDL particles are one size class within the LDL family, measured by advanced methods such as NMR that count lipoprotein particles instead of only measuring cholesterol content. A higher overall LDL particle number can be associated with greater cardiovascular risk, especially when it does not match the standard LDL cholesterol result, though particle size on its own has been harder to tie to risk independently. This is an advanced marker seen only in specialized lipoprotein-particle testing rather than a routine panel.

This glossary entry is for informational purposes only and is not a substitute for professional medical advice. Read our Terms of Use.

References

Peer-reviewed "LDL particle number and size and cardiovascular risk" PubMed. doi.org/10.1097/MOL.0000000000000419.

About our sources

Clinical / professional

Medical societies, specialty colleges, and professional associations whose consensus statements reflect clinical practice standards.

Peer-reviewed research

Original research articles and systematic reviews published in indexed journals and verified through PubMed or DOI.

History of updates

Published · Jul 13, 2026
First published, written and independently fact-checked against the cited sources.

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