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Low-Density Lipoprotein (LDL) Oxidized Antibody, Serum — Immunoassay, Arbitrary Concentration

Published: August 9, 2026Updated: August 16, 2026

Measures antibodies directed against oxidized LDL in serum to assess an immune response to oxidized low-density lipoprotein.

Quick summary

["This specialized blood test detects antibodies associated with oxidized LDL and may support evaluation of cardiovascular risk."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
68935-6
Short code
LDL.oxidized Ab Ser IA-aCnc
Synonyms
LDL.oxidized Ab Ser IA-aCnc
Category
lipid
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
0
Ref high
100
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ia
CPT
83721
SNOMED
113079007
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What is this test?

This test measures antibodies that recognize oxidized low-density lipoprotein (LDL) in your blood. LDL is a cholesterol-carrying particle, and oxidation of LDL can contribute to vascular inflammation and plaque formation.

Why might I need this test?

It may be ordered as a specialized marker of immune activity related to oxidized LDL. Results are sometimes considered in cardiovascular risk assessment or in the evaluation of conditions involving immune responses and inflammation.

How is the test performed?

A blood sample is drawn and the serum is analyzed using an immunoassay, a laboratory method that detects antibodies. The result may be reported in arbitrary units because it is not measured as a standard chemical concentration.

How do I prepare for the test?

Fasting is generally not required, but follow any instructions from your clinician or laboratory. Inform the healthcare team if you have an autoimmune condition, are taking immune-modifying medicines, or have recently received an antibody-based treatment.

Reference range

Optimal: <100 mg/dLN/A

Specimen: serum

Fasting for 12-14 hours preferred. Water is permitted. Avoid alcohol for 24 hours before the test.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Oxidized LDL antibody

Frequently asked questions

Does this test measure LDL cholesterol?
No. It measures antibodies directed against oxidized LDL, rather than the amount of LDL cholesterol in the blood.
What does a positive result mean?
It means the blood contains detectable antibodies that recognize oxidized LDL. This alone does not diagnose heart disease or another specific condition.
Is this a routine cholesterol test?
No. Oxidized LDL antibody testing is specialized and is not usually part of a standard lipid panel or routine cardiovascular screening.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy