Apo B / Apo A1 Ratio (Apo B/A1)

This test is done to evaluate the ratio between apolipoprotein B (Apo B), found in atherogenic particles (LDL, VLDL), and apolipoprotein A1 (Apo A1), the main protein in HDL. A higher ratio indicates increased cardiovascular risk, while a lower ratio reflects better lipid balance and protection against atherosclerosis.

• Fasting: Not always required (follow lab instructions).
• Avoid heavy meals before testing if possible.
• Inform your healthcare provider about lipid-lowering medications.
• Follow any instructions provided by the laboratory or healthcare provider.