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Lab test

Oxidized LDL (OxLDL) Test

The Oxidized LDL test measures oxidized LDL, a modified form of LDL cholesterol, in a serum sample using immunoassay methodology. Clinicians consider it in the broader context of cardiovascular and metabolic syndrome risk, alongside other markers and a person's history.

Blood drawQuest patient service center

About this test

Oxidized LDL is a modified form of LDL cholesterol. The test reports the level of oxidized LDL in a serum sample, measured using immunoassay methodology.

This test may be considered for people at low or intermediate risk of metabolic syndrome or cardiovascular disease, and for people who already have cardiovascular disease and are being evaluated for the risk of a future adverse cardiac event. Like other single markers, an oxidized LDL result is read by a clinician alongside other risk factors rather than on its own.

Test details

Quest code92769
MethodologyImmunoassay
Sample type0.5 mL serum
CollectionQuest patient service center

Reference range

<60 U/L

Reference ranges are general guidance. The range printed on your own laboratory report is the one that applies to your result.

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Quest resources

Additional details

What this test looks at

The test reports one value: the level of oxidized LDL, a modified form of LDL cholesterol, in the blood. It is measured using immunoassay methodology on a serum sample. Because oxidized LDL is one input among several used in assessing cardiovascular and metabolic syndrome risk, a clinician reads the result together with a person's broader risk profile rather than as a standalone answer.

Order online and a physician order is included — no doctor's visit and no insurance needed. Your sample is collected at a Quest Diagnostics patient service center.

Laboratory results should always be interpreted by a licensed clinician who knows your health history. This page is information about a test, not medical advice.

Frequently asked questions

What does the Oxidized LDL (OxLDL) test measure?

It measures oxidized LDL, a modified form of LDL cholesterol, in a serum sample using immunoassay methodology.

How is the sample collected?

The test uses a small serum sample from a routine blood draw.

Do I need to prepare for this test?

No preparation instructions are listed for this test, though people follow any instructions their ordering clinician provides.

Who might consider an Oxidized LDL test?

It may be considered by people at low or intermediate risk of metabolic syndrome or cardiovascular disease, and by people who already have cardiovascular disease and are being evaluated for the risk of a future cardiac event.

How much does the OxLDL test cost?

The cash price at Celio Health is $89. That covers the physician's order and sample collection at a Quest patient service center — no insurance is needed and there's no separate doctor's visit to pay for.

Last updated 2026-09-18 · How we write about lab testing

Educational content

This page is for general educational purposes only. It is not medical advice, and it is not a substitute for consultation with a qualified healthcare professional. Laboratory results should always be interpreted by a licensed clinician who knows your health history. If you have questions about your health or your results, talk with your doctor. If you think you may be experiencing a medical emergency, call 911.