Instalab
TestsLipidsα-1 HDL

α-1 HDL Test

Very large, mature HDL particles rich in cholesterol, considered the most protective for cardiovascular health.

About α-1 HDL

HDL particles are organized into subclasses such as alpha-1, alpha-2, and pre-beta. These subclasses reflect differences in size and maturity. Alpha-1 HDL is one of the larger, more mature forms, and it has been consistently linked to beneficial cardiovascular functions, especially its ability to promote cholesterol efflux. Cholesterol efflux is the process by which HDL removes excess cholesterol from artery wall cells and transports it to the liver for disposal, a mechanism central to preventing plaque buildup and atherosclerosis.

Functional Properties of HDL Alpha 1

  • Cholesterol Efflux and Reverse Transport: Its efficiency at clearing cholesterol from artery walls makes alpha-1 particularly valuable for cardiovascular protection.
  • Anti-inflammatory and Antioxidant Effects: HDL can reduce vascular inflammation and oxidative stress, both key drivers of atherosclerosis. These protective effects extend beyond cholesterol handling.
  • Platelet and Endothelial Modulation: HDL and its main protein ApoA-I influence platelet activity and improve endothelial function, further reducing clotting risk and supporting vascular health.

References

10 studies
  1. Pilard Et Al.Arteriosclerosis, Thrombosis, and Vascular Biology2025
  2. Van Der VorstSub-cellular Biochemistry2020