Total IDL - Lipid Subfractions

IDL cholesterol measures the concentration of intermediate-density lipoproteins in the blood, providing insight into lipid transport and cardiovascular risk.

📋 About This Biomarker

Intermediate-Density Lipoproteins (IDLs) are particles in the blood that transport fats, including cholesterol and triglycerides, from the liver to various tissues. IDLs are transitional forms between Very Low-Density Lipoproteins (VLDL) and Low-Density Lipoproteins (LDL). Elevated levels of IDL cholesterol can contribute to the buildup of fatty deposits in arteries, increasing the risk of cardiovascular diseases. Monitoring IDL levels provides insight into lipid metabolism and cardiovascular risk.

🎯 Why We Test This

Testing IDL levels helps assess cardiovascular risk, especially in individuals with a family history of heart disease or those with abnormal lipid profiles. It aids in the early detection and management of potential atherosclerotic conditions.

⚠️ What Affects It

Several factors can influence IDL levels, including diet (especially high in saturated fats), physical inactivity, obesity, genetic predispositions, and certain medical conditions like diabetes and hypothyroidism. Medications, such as lipid-lowering drugs, can also impact IDL concentrations.

📈 How to Improve

To lower elevated IDL levels: adopt a heart-healthy diet low in saturated fats, engage in regular physical activity, maintain a healthy weight, and consider medications as prescribed by a healthcare provider. For levels close to the upper limit, lifestyle modifications may suffice. Low or near-low levels typically require no intervention but should be interpreted alongside other lipid measurements.

📊 Understanding Your Results (mmol/L)

Low (< 0.52 mmol/L)
Significantly low IDL levels are uncommon and typically not a cause for concern. They may result from certain genetic factors or aggressive lipid-lowering therapy. Clinical context is essential to determine relevance.
Optimal (0.52 - 1.73 mmol/L)
IDL levels within the normal range suggest a balanced lipid profile and a lower risk of cholesterol-related cardiovascular issues. It reflects effective lipid metabolism and transport in the body.
High (> 1.73 mmol/L)
Elevated IDL levels may indicate an increased risk of atherosclerosis and cardiovascular diseases. It suggests that the body has an excess of cholesterol-rich lipoproteins, which can deposit in arterial walls, leading to plaque formation and narrowed arteries.
Also known as: Total IDL, IDL-C