Vitamin D Test
A clear view of what matters to bring your health into perspective.
Vitamin D is both a nutrient you eat as well as a hormone that is produced in your skin in response to sunlight. It plays a significant role in bone health because it helps regulate calcium and phosphorus— two essential minerals that work together to build strong bones.
This test evaluates 25-hydroxyvitamin D (25-D), the best measure of how much vitamin D is stored in your body. A prolonged deficiency in Vitamin D can pose health risks. Vitamin D occurs naturally in very few foods so most people cannot get sufficient vitamin D through nutrition alone. If Vitamin D levels are low, vitamin supplementation may be helpful, especially when access to natural sunlight is limited.
The best measure of how much Vitamin D is stored in your body. A prolonged deficiency in Vitamin D can pose health risks.
At Risk of Deficiency
People who might need extra vitamin D include:Seniors, people with dark skin, people with certain conditions, such as liver diseases, cystic fibrosis, and Crohn’s disease and people who are obese or have had gastric bypass surgery.1
Vitamin D helps regulate the calcium levels in our bodies, which plays an important role in strengthening bones and preventing bone-weakening conditions, such as as osteoporosis.1
It is possible to improve your vitamin D levels through nutrition, increased sunlight exposure, and supplements.2
1.“Vitamin D.” MedlinePlus, U.S. National Library of Medicine, 29 Jan. 2019, https://www.medlineplus.gov/vitamind.html
2.“Office of Dietary Supplements – Vitamin D.” NIH Office of Dietary Supplements, U.S. Department https://ods.od.nih.gov/factsheets/VitaminD-HealthProfessional/