HDL Subfractions (Large/Small)
HDL subfraction testing separates HDL into larger, more mature particles (HDL2) and smaller precursor particles (HDL3). Large HDL particles are generally considered more cardioprotective because they efficiently carry cholesterol back to the liver, while functional quality may matter more than absolute numbers. Subfractions add detail to HDL-C for cardiovascular risk assessment.
4 providers include this
Additional Specialized Tests
Large HDL-2 preferred for cardioprotection
What is HDL Subfractions (Large/Small)?
HDL subfraction testing separates HDL into larger, more mature particles (HDL2) and smaller precursor particles (HDL3). Large HDL particles are generally considered more cardioprotective because they efficiently carry cholesterol back to the liver, while functional quality may matter more than absolute numbers. Subfractions add detail to HDL-C for cardiovascular risk assessment.
Why It Matters
Large HDL-2 more cardioprotective than small HDL-3. HDL subfraction analysis provides refined cardiovascular risk assessment.
Which Providers Test HDL Subfractions (Large/Small)?
Full Provider Comparison
| Provider | Includes | Annual Cost | Biomarkers |
|---|---|---|---|
 Superpower | — | $199 | 100+ (150 with ratios) |
 WHOOP Advanced Labs | — | $349 | 65 |
 Labcorp OnDemand | — | $398 | 40+ |
| — | $486 | 40+ | |
| — | $449 | 288 | |
| ✓ | $349 | 100+ | |
| — | $829 | 54 | |
 Function Health | ✓ | $365 | 160+ |
| — | $250 | 65 | |
| — | $495 | 80+ | |
| — | $895 | 100+ | |
| — | $1950 | 130+ | |
| — | $375 | 95+ | |
| — | $Varies | 75+ | |
| — | $190 | 100+ | |
| — | $99 | 50 | |
| — | $124 | 60 | |
| — | $349 | 130+ | |
| ✓ | $349 | 80+ | |
| — | $375 | 85 | |
| — | $700 | 128 | |
| ✓ | $99 | 100+ |
Frequently Asked Questions
What is HDL Subfractions (Large/Small)?
HDL subfraction testing separates HDL into larger, more mature particles (HDL2) and smaller precursor particles (HDL3). Large HDL particles are generally considered more cardioprotective because they efficiently carry cholesterol back to the liver, while functional quality may matter more than absolute numbers. Subfractions add detail to HDL-C for cardiovascular risk assessment.
What is the optimal range for HDL Subfractions (Large/Small)?
The standard reference range for HDL Subfractions (Large/Small) is Large HDL-2 preferred for cardioprotection. Optimal ranges may differ based on individual health goals and expert recommendations.
Which blood test providers include HDL Subfractions (Large/Small)?
4 out of 22 blood testing providers include HDL Subfractions (Large/Small) in their panels. This biomarker has limited availability.
What category does HDL Subfractions (Large/Small) fall under?
HDL Subfractions (Large/Small) is categorized under Additional Specialized Tests. This category includes biomarkers that help assess related aspects of health and wellness.
Medical Disclaimer
This information is for educational purposes only and is not medical advice. Always consult with a qualified healthcare provider about your specific health needs.
Last reviewed:2026-04-12