This Apolipoprotein Assessment (Apo A1, Apo B, and Apo B/A1 Ratio) evaluates levels of two key apolipoproteins involved in cholesterol transport: Apo A1, associated with “good” HDL cholesterol, and Apo B, linked to “bad” LDL cholesterol. The test helps assess cardiovascular risk more accurately than traditional cholesterol tests by analyzing the balance of lipoproteins in the blood. A high Apo B/A1 ratio can indicate increased cardiovascular risk, while a lower ratio may suggest better heart health. This test is different from a traditional LDL/HDL cholesterol test because it directly measures the proteins (Apo A1 and Apo B) that carry cholesterol, providing a more precise assessment of cardiovascular risk.

Fasting is not required, but it may be recommended if the test is part of a broader lipid panel or if triglycerides are being measured simultaneously.

After order completion, a provider will submit your Lab Requisition Form to Labcorp, within 24 (business) hours. You will also be emailed a copy of your LRF to take to your nearest Labcorp with valid photo ID. Your results will be available in your Labcorp Patient Portal as soon as they become available, and we will securely email you a PDF copy. Email verification will be required, please check your spam folder.