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Understand Oxidized LDL (oxLDL)

Oxidized LDL (oxLDL)

Heart & circulation markers

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

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Updated Jul 13, 2026

What is Oxidized LDL (oxLDL)?

LDL (bad cholesterol) that has been chemically damaged by oxidative stress.

Oxidized LDL is LDL cholesterol that has been altered by oxidative stress, a change that makes it more likely to be taken up into artery walls and to feed plaque buildup. Higher levels have been associated in research with atherosclerosis and cardiovascular risk, and oxLDL is being studied as a marker of unstable plaque. This is an advanced, research-oriented marker rather than a routine blood test.

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References

Peer-reviewed "Oxidized LDL and anti-oxidized LDL antibodies in atherosclerosis" PubMed. doi.org/10.1016/j.tcm.2018.05.010.

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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