Small HDL Particle levels: what's normal, high and low
The count of small HDL particles, the less protective HDL subclass.
Medically reviewed by Youmna DiStefano, MD · Last reviewed October 2026
The short answer
Small HDL Particle is measured with a standard blood draw; no fasting is needed. TestWell offers panels that include Small HDL Particle, drawn at Quest or Labcorp. An out-of-range result is a prompt to look closer, not a diagnosis.
Testing for Small HDL Particle
This marker is reported as part of a panel rather than as a standalone test. Browse the panels that include it.
Browse tests- Units
- umol/L / µmol/L / nmol/L
- Sample
- Blood
- Fasting
- Not required
- Results
- 1–3 business days
- Labs
- Quest or Labcorp
Small HDL Particle Reference Range
These are the typical adult reference ranges used by major US labs. Your report will include the specific range used by the lab that processed your sample.
| Population | Range |
|---|
Reference ranges are educational. Always interpret your result with the specific range printed on your lab report and discuss anything outside the range with a clinician.
Have a result in hand? analyze it with your AI assistant using these reviewed ranges, or run it through our explainer. Tools: look up another marker's range · convert lab units
Related Heart Health biomarkers
Markers commonly tested alongside Small HDL Particle.
Frequently asked
Do I need a doctor's order to test my small hdl particle?
No. TestWell's licensed physician network reviews and approves your order — usually within minutes. You can place an order online without an in-person visit or a referral from your own doctor.
How long does it take to get Small HDL Particle results?
Most Small HDL Particle results are available in 1–3 business days after your specimen arrives at the lab. You'll get an email the moment your results are ready, with everything viewable in your TestWell portal.
Where can I order a Small HDL Particle test?
TestWell offers panels that include Small HDL Particle alongside related markers. Browse our test catalog to find the panel that fits your goals.
Do I need to fast before my Small HDL Particle test?
Fasting is not required for the Small HDL Particle test. You can have your blood drawn any time of day.
Which lab will process my Small HDL Particle test?
Your test will be processed by Quest Diagnostics, Labcorp, or BioReference depending on which is closest to you and which lab carries the test. All three are CLIA-certified and trusted by hospitals nationwide. You'll choose your lab during checkout from 4,000+ locations.
Ready to test your small hdl particle?
Order in two minutes, get physician-approved, and visit a lab the same day.