PTH
This test measures the level of parathyroid hormone (PTH) in your blood. The normal range is 10–65 pg/mL for adults, as American Board of Internal Medicine (Laboratory Test Reference Ranges) publishes it. Labs differ by up to 80%.
PTH, is made by your parathyroid glands. They are four pea-sized glands in your neck.
Source: MedlinePlus, U.S. National Library of MedicineNormal range
13 published ranges, each from a named source 1065 pg/mL drawn: all ages · American Board of Internal Medicine (Laboratory Test Reference Ranges)
- 18 y+
- 15–65 pg/mL
- Normal
- 10–65 pg/mL (varies by lab)ABIM 10–65 · ARUP 18–59 · Laboratorium Medyczne Synevo 15–65 pg/mL
These labs do not agree: the published adult ranges differ by up to 80%, so the same result can read as normal at one lab and be flagged at another — ABIM 10–65 · ARUP 18–59 · Laboratorium Medyczne Synevo 15–65 pg/mL. Both are real published values, shown as each lab states them.
Ranges from ARUP Laboratories Test Directory, American Board of Internal Medicine (Laboratory Test Reference Ranges), Laboratorium Medyczne Synevo (test catalog, synevo.pl), Mayo Clinic Laboratories (Pediatric Test Catalog), Mayo Clinic Laboratories (Test Catalog).All source ranges (13)
by lab, sex and age, as published ·
| Source | Sex | Age | Range |
|---|---|---|---|
| American Board of Internal Medicine (Laboratory Test Reference Ranges) | All | all ages | 10–65 pg/mL |
| ARUP Laboratories Test Directory | All | all ages | 18–59 pg/mL |
| Mayo Clinic Laboratories (Test Catalog) | All | ≤ 30 d | 7–59 pg/mL |
| Mayo Clinic Laboratories (Pediatric Test Catalog) | All | ≤ 30 d | 7–59 pg/mL |
| Mayo Clinic Laboratories (Test Catalog) | All | 28 d – 11 mo | 8–61 pg/mL |
| Mayo Clinic Laboratories (Pediatric Test Catalog) | All | 28 d – 11 mo | 8–61 pg/mL |
| Mayo Clinic Laboratories (Test Catalog) | All | 1 y – 10 y | 11–59 pg/mL |
| Mayo Clinic Laboratories (Pediatric Test Catalog) | All | 1 y – 10 y | 11–59 pg/mL |
| Mayo Clinic Laboratories (Test Catalog) | All | 11 y – 17 y | 15–68 pg/mL |
| Mayo Clinic Laboratories (Pediatric Test Catalog) | All | 11 y – 17 y | 15–68 pg/mL |
| Mayo Clinic Laboratories (Test Catalog) | All | 18 y+ | 15–65 pg/mL |
| Mayo Clinic Laboratories (Pediatric Test Catalog) | All | 18 y+ | 15–65 pg/mL |
| Laboratorium Medyczne Synevo (test catalog, synevo.pl) | All | all ages | 15–65 pg/mL |
What a high or low result can mean
LOINC2HPO, Monarch InitiativeA high result Hyperparathyroidism
A low result Hypoparathyroidism
This is reference information, not a diagnosis: only a clinician can interpret your result in context.
- Sample
- Serum or plasma · LOINC
- Collection
- Serum gel tube · 1 mL · fasting · Mayo Clinic Laboratories (Test Catalog)
- Listed under
- Hormones · Parathyroid Disorders
- Code
- LOINC 2731-8 · pg/mL
- Also called
- Parathyrin intact, PTH-Intact
See your own PTH Upload a lab PDF and it is drawn against your lab's range, over time. Free, no account. Upload a Blood Test
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