Oxidized LDL
Doctor's Data
Sample type: Serum
Requires fasting: Yes
Phlebotomy is required for this test
Details
Plasma levels of Ox-LDL are a sensitive biomarker of atherosclerosis. Elevated Ox-LDL is associated with accelerated atherogenesis, CAD, acute myocardial infarction, and stable and unstable angina. High Ox-LDL has also been associated with metabolic syndrome, impaired glucose tolerance and insulin resistance, and untreated overt hypothyroidism.
- OxLDL
Estimated days for results: Results should arrive 5 to 7 days after the lab receives samples.
Oxidized low density lipoproteins are directly involved in the initiation and progression of atherosclerotic lesions in coronary arteries that can result in atherosclerotic coronary artery disease (CAD). This test measures plasma levels of oxidized low density lipoproteins (Ox-LDL) using a highly sensitive and specific immunoassay. Plasma levels of Ox-LDL are a sensitive biomarker of atherosclerosis.
Elevated levels of Ox-LDL are associated with accelerated atherogenesis, CAD, acute myocardial infarction, and stable and unstable angina. It's important to note that total cholesterol levels are not necessarily higher than normal in patients with unstable CAD. Elevated Ox-LDL has also been associated with metabolic syndrome, impaired glucose tolerance and insulin resistance, and untreated overt hypothyroidism.
Low density lipoproteins (LDL), the major carrier of circulating cholesterol, are very susceptible to oxidation of the constituent apolipoprotein B-100 moiety by prooxidants such as metal ions, reactive oxygen radicals, oxidized macrophages, lipoxygenase and peroxynitrite. When the LDL protein is oxidized it becomes antigenic and the Ox-LDL are taken up excessively by the unregulated "scavenger" or Ox-LDL receptors on monocyte-derived macrophages. Unoxidized native LDL are not involved in the unregulated uptake process and Ox-LDL is present in macrophages in atherosclerotic lesions but not in normal arteries.
Once macrophages breach the damaged arterial endothelial barrier, the excessive uptake of lipids form Ox-LDL contributes to their entrapment in the sub-endothelial space. The trapped lipid-laden "foam" cells elicit biosynthesis and release of factors by endothelial cells that are pro-inflammatory and chemotactic for other monocytes, perpetuating the atherosclerotic process with injury to the arteries.
Injury to the sub-endothelial vessel walls results in decreased production of nitric oxide and elasticity of the arteries and the damaged lipid-laden arteries eventually narrow, restricting the flow of blood. Increased antioxidant protection and amelioration of oxidative stress would be expected to decrease levels of atherogenic Ox-LDL.
These test results should be interpreted in context with the constellation and severity of symptoms and findings, as well as family history. Direct testing for CAD may be warranted if the level of Ox-LDL is undesirable. Plasma levels of Ox-LDL are a sensitive biomarker of atherosclerosis. Elevated Ox-LDL is associated with accelerated atherogenesis, CAD, acute myocardial infarction, and stable and unstable angina. High Ox-LDL has also been associated with metabolic syndrome, impaired glucose tolerance and insulin resistance, and untreated overt hypothyroidism.
Useful for:
Elevated levels of Ox-LDL are associated with accelerated atherogenesis, CAD, acute myocardial infarction, and stable and unstable angina. It's important to note that total cholesterol levels are not necessarily higher than normal in patients with unstable CAD. Elevated Ox-LDL has also been associated with metabolic syndrome, impaired glucose tolerance and insulin resistance, and untreated overt hypothyroidism.
Low density lipoproteins (LDL), the major carrier of circulating cholesterol, are very susceptible to oxidation of the constituent apolipoprotein B-100 moiety by prooxidants such as metal ions, reactive oxygen radicals, oxidized macrophages, lipoxygenase and peroxynitrite. When the LDL protein is oxidized it becomes antigenic and the Ox-LDL are taken up excessively by the unregulated "scavenger" or Ox-LDL receptors on monocyte-derived macrophages. Unoxidized native LDL are not involved in the unregulated uptake process and Ox-LDL is present in macrophages in atherosclerotic lesions but not in normal arteries.
Once macrophages breach the damaged arterial endothelial barrier, the excessive uptake of lipids form Ox-LDL contributes to their entrapment in the sub-endothelial space. The trapped lipid-laden "foam" cells elicit biosynthesis and release of factors by endothelial cells that are pro-inflammatory and chemotactic for other monocytes, perpetuating the atherosclerotic process with injury to the arteries.
Injury to the sub-endothelial vessel walls results in decreased production of nitric oxide and elasticity of the arteries and the damaged lipid-laden arteries eventually narrow, restricting the flow of blood. Increased antioxidant protection and amelioration of oxidative stress would be expected to decrease levels of atherogenic Ox-LDL.
These test results should be interpreted in context with the constellation and severity of symptoms and findings, as well as family history. Direct testing for CAD may be warranted if the level of Ox-LDL is undesirable. Plasma levels of Ox-LDL are a sensitive biomarker of atherosclerosis. Elevated Ox-LDL is associated with accelerated atherogenesis, CAD, acute myocardial infarction, and stable and unstable angina. High Ox-LDL has also been associated with metabolic syndrome, impaired glucose tolerance and insulin resistance, and untreated overt hypothyroidism.
Useful for:
- Coronary Artery Disease
- Heart Attack
- Metabolic Syndrome
- Type 2 Diabetes
- Oxidative Stress
5–7 business days
- Add-on: Serum Elements
- Add-on: Zonulin Family Protein
Please read all of the directions, and familiarize yourself with the collection
procedures.
This test requires a single blood collection that is drawn before breakfast
after an overnight (6 hour minimum) fast. Non-Fasting collections can cause
deviations in patient results.
There are no special dietary requirements for this test unless otherwise
instructed by your physician.
Never discontinue prescription medications without first consulting your physician.
procedures.
This test requires a single blood collection that is drawn before breakfast
after an overnight (6 hour minimum) fast. Non-Fasting collections can cause
deviations in patient results.
There are no special dietary requirements for this test unless otherwise
instructed by your physician.
Never discontinue prescription medications without first consulting your physician.
State restrictions:
Patient can't order this test if they are located in Hawaii, Puerto Rico, New Jersey, New York, or Rhode Island
