Is an LDL cholesterol level of 3.20 mmol/L considered severe?

Generally, an LDL cholesterol level of 3.2 mmol/L is not considered severe, but further individualized assessment is required. The normal reference range for LDL cholesterol in clinical biochemistry laboratories is <3.4 mmol/L.

Analysis is as follows:

1. If isolated hyperlipidemia is present without any other concomitant clinical conditions, an LDL cholesterol level <3.4 mmol/L is considered normal.

2. In patients with comorbid hypertension or diabetes mellitus, the target LDL cholesterol level should be <2.6 mmol/L.

3. In patients with established coronary artery disease (CAD) or peripheral arterial disease (e.g., carotid or lower-limb arterial stenosis), the target LDL cholesterol level should be <2.1 mmol/L. For CAD patients who have undergone percutaneous coronary intervention with stent implantation, the target LDL cholesterol level should be <1.8 mmol/L.

LDL cholesterol is one component of blood lipids and is primarily metabolized and degraded by the liver. Elevated LDL cholesterol levels can cause damage to the inner lining of blood vessels; over time, this may lead to atherosclerosis and increase the risk of cardiovascular and cerebrovascular diseases.