Elevated circulating HDL-C concentration

What it means

The concentration of high-density lipoprotein cholesterol in the blood circulation is above the upper limit of normal.

The major apolipoproteins of HDL are apolipoprotein (apo) A-I and apo A-II, also known as the alpha lipoproteins. Thus, hyperalphalipoproteinemia refers to an elevated concentration of apo A-I and apo A-II.

Rare diseases that can present with this2

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Elevated high-density lipoprotein cholesterol concentration · Elevated high-density lipoprotein cholesterol level · Elevated high-density lipoprotein cholesterol level in blood · Hyperalphalipoproteinemia · Increased circulating high-density lipoprotein levels · Increased high-density lipoprotein cholesterol concentration · Increased high-density lipoprotein cholesterol level · Increased high-density lipoprotein cholesterol level in blood