HDL Particle Size levels: what's normal, high and low
The average diameter of your HDL particles. Larger HDL is the more protective, cholesterol-laden form.
Medically reviewed by Youmna DiStefano, MD · Last reviewed October 2026
The short answer
HDL Particle Size is measured with a standard blood draw after an 8–12 hour fast. At TestWell it's $90.99 all-in as Advanced Lipid Panel, results in 3–5 business days, drawn at Quest. An out-of-range result is a prompt to look closer, not a diagnosis.
- Units
- nm
- Sample
- Blood draw
- Fasting
- 8–12 hours
- Results
- 3–5 business days
- Price
- $90.99
- Labs
- Quest
HDL Particle Size 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
How do you get a HDL Particle Size test?
Order online, a licensed physician reviews the requisition, and you walk into a nearby lab for the draw. HDL Particle Size is available on its own or inside these panels — panels cost less per marker when you want the fuller picture.
| Option | Includes | Price |
|---|---|---|
| Advanced Lipid Panel | This marker only | $90.99 |
Quest vs. Labcorp for HDL Particle Size: which lab should you pick?
Both are CLIA-certified national labs and the result is clinically equivalent, so pick whichever location is closer. Your report will print that lab's own reference range, which can differ slightly from the table above.
| Lab | Available | Price |
|---|---|---|
| Quest Diagnostics | Yes | $90.99 |
| Labcorp | No | — |
| BioReference (NY & NJ) | No | — |
Need help choosing a location? Use the lab finder to see draw sites near your ZIP.
Related Heart Health biomarkers
Markers commonly tested alongside HDL Particle Size.
Frequently asked
Do I need a doctor's order to test my hdl particle size?
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 HDL Particle Size results?
Most HDL Particle Size 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.
How much does a HDL Particle Size test cost?
Our Advanced Lipid Panel starts at $90.99. That's the all-in price — no copays, no insurance hoops, no surprise bills. HSA and FSA cards are accepted.
Do I need to fast before my HDL Particle Size test?
Yes — for the most accurate result, fast for 8–12 hours before your blood draw. Water is fine; coffee, food, and supplements are not. Your prep instructions will be included with your order.
Which lab will process my HDL Particle Size 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 hdl particle size?
Order in two minutes, get physician-approved, and visit a lab the same day. Starts at $90.99.