LDL Peaks is a summary measure derived from LDL subfraction analysis that identifies the dominant LDL particle pattern. It indicates whether the LDL distribution peaks in the large, buoyant range (pattern A) or in the small, dense range (pattern B). Pattern B is associated with approximately three times the cardiovascular risk of pattern A at any given total LDL cholesterol level.
Pattern A is characterised by large, buoyant LDL particles that are less prone to oxidation and arterial wall penetration. Pattern B is characterised by small, dense LDL particles that accumulate in arterial walls more readily, contribute to plaque formation, and are more susceptible to oxidative modification. The LDL Peaks result provides a clear clinical summary of the overall atherogenicity of the LDL pool.
FAQs
Can I have pattern B with normal LDL?
Yes. This is precisely why LDL subfraction testing is clinically valuable. Standard LDL cholesterol can appear normal or borderline while the particle pattern is predominantly small dense (pattern B), creating a falsely reassuring standard risk assessment.
How do I know if I have pattern A or B without a subfraction test?
Low HDL combined with elevated triglycerides strongly predicts pattern B, even without formal subfraction testing. The triglyceride/HDL ratio is a useful surrogate: above 2.0 mmol/mmol suggests pattern B is likely.
How quickly can the pattern change with lifestyle changes?
Significant improvements in LDL subfraction pattern can occur within 8-12 weeks of sustained dietary and lifestyle changes. Reduction in triglycerides and improvement in insulin sensitivity drive the shift from pattern B toward pattern A.
Is pattern B treatable?
Yes. Pattern B is highly responsive to lifestyle intervention. Reducing refined carbohydrates and increasing healthy fats is particularly effective. Fibrate medication can also shift the pattern when lifestyle changes are insufficient.
