PTH

This test measures the level of parathyroid hormone (PTH) in your blood. PTH, is made by your parathyroid glands. They are four pea-sized glands in your neck.

Source: MedlinePlus, U.S. National Library of Medicine

Normal 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)

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 an abnormal result can be associated with

A high result: Hyperparathyroidism
A low result: Hypoparathyroidism

Associations from LOINC2HPO (Human Phenotype Ontology). This is reference information, not a diagnosis: only a clinician can interpret your result in context.

details

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 known as: Parathyrin intact, PTH-Intact, Parathormone, PTH, Tumor marker

See your own PTH Add a lab report and it is drawn against your lab's range, over time. Upload a Blood Test