A vitamin D test measures the levels of vitamin D in your blood. Vitamin D helps your body absorb calcium to build healthy bones and teeth. It also helps keep your muscles, nerves, and immune system working normally. Having vitamin D deficiency (very low levels of vitamin D) can lead to bone disorders and other medical conditions.
A vitamin D test is used to check the levels of vitamin D in your blood. The test is usually done if your health care provider thinks that a bone or other health condition you have could be caused by very low vitamin D levels.
Source: MedlinePlus, U.S. National Library of Medicine
Normal range
Result tiers from clinical guidelines — not a single normal band.
What an abnormal result can be associated with
- A high result
- Elevated circulating calcitriol concentration
- A low result
- Decreased circulating calcifediol concentration
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
- Part of
- Calcidiol and Calciferol panel
- Listed under
- Parathyroid Disorders · Vitamin D
- Code
- LOINC 1989-3 · ng/mL
- Also known as
- Calcidiol, Calcifediol, Calciderol