PTH, Intact levels: what's normal, high and low
A hormone that controls calcium balance by acting on bone and kidneys.
Medically reviewed by Youmna DiStefano, MD · Last reviewed September 2026
The short answer
PTH, Intact is measured with a standard blood draw; no fasting is needed. A typical reference range is 15.0 – 65.0 pg/mL. At TestWell it's $59.99 all-in as PTH (Parathyroid Hormone), results in 2–4 business days, drawn at Quest or Labcorp. An out-of-range result is a prompt to look closer, not a diagnosis.
- Units
- pg/mL
- Sample
- Blood draw
- Fasting
- Not required
- Results
- 2–4 business days
- Price
- $59.99
- Labs
- Quest or Labcorp
PTH, Intact 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 |
|---|---|
| age 18+ | 15.0 – 65.0 pg/mL |
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.
What your PTH, Intact result may mean
Can reflect parathyroid overactivity (primary), or compensation for low calcium or vitamin D (secondary).
What a high PTH, Intact means: causes, symptoms, next steps →Can reflect parathyroid issues or high calcium from another source.
What a low PTH, Intact means: causes, symptoms, next steps →Educational only — not a diagnosis. Many factors can influence a single result. Discuss anything that concerns you with a healthcare provider.
How do you get a PTH, Intact test?
Order online, a licensed physician reviews the requisition, and you walk into a nearby lab for the draw. PTH, Intact is available on its own or inside these panels — panels cost less per marker when you want the fuller picture.
| Option | Includes | Price |
|---|---|---|
| PTH (Parathyroid Hormone) | This marker only | $59.99 |
| Total Body Panel | 49 tests | $499.99 |
Quest vs. Labcorp for PTH, Intact: 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 | $59.99 |
| Labcorp | Yes | $59.99 |
| BioReference (NY & NJ) | No | — |
Need help choosing a location? Use the lab finder to see draw sites near your ZIP.
Related Hormones biomarkers
Markers commonly tested alongside PTH, Intact.
Frequently asked
Can reflect parathyroid overactivity (primary), or compensation for low calcium or vitamin D (secondary). A single result above the reference range is a prompt to look closer with a clinician — often a repeat test and related markers — not a diagnosis on its own.
Ready to test your pth, intact?
Order in two minutes, get physician-approved, and visit a lab the same day. Starts at $59.99.