Normal vitamin D levels by age, sources, and toxicity
Dec 21, 2023 · For adults, a level of vitamin D in the blood of 20 nanograms per milliliter (ng/mL) or above is generally considered adequate. Levels below 20 ng/mL are generally too low for adequate bone...
What Are the Normal Vitamin D Levels by Age? - Verywell Health
Jan 14, 2025 · Vitamin D levels can be measured with a blood test. This test can indicate whether you have adequate levels, are at risk of a vitamin D deficiency, or have levels that are too high. Levels that are too low or too high could be harmful to your health. The 25-hydroxy vitamin D blood test can determine ...
Vitamin D in the blood - 25-hydroxy vitamin D - Normal ranges
Oct 10, 2024 · The normal range for vitamin D in the blood is: Adults: 30 - 50 ng/mL Children: 30 - 50 ng/mL. In the International System of Units (SI), vitamin D [25(OH)D] in the blood is measured in nmol/L. The normal vitamin D level in the blood in the SI is: Adults: 75 - 125 nmol/L Children: 75 - 125 nmol/L. Why normal levels can differ across different labs?
Vitamin D: What's the "right" level? - Harvard Health
Apr 16, 2020 · At that time, their experts concluded: "Based on all the evidence, at a minimum, we recommend vitamin D levels of 30 ng/mL, and because of the vagaries of some of the assays, to guarantee sufficiency, we recommend between 40 and 60 ng/mL for both children and adults." But wait, there's more…
What Is the Normal Range for Vitamin D in a Blood Test?
According to the Institute of Medicine, the optimum range of 25-hydroxy vitamin D in the blood is 20 to 50 nanograms per milliliter, abbreviated ng/mL. Less than 20 ng/mL is inadequate, but more than 50 ng/mL may also put your health at risk.
Normal Vitamins D Levels | Vitamin D Deficiency - Everlywell
Aug 11, 2020 · Vitamin D levels: what's normal? What should vitamin D levels be to avoid deficiency and support health? The National Institutes of Health (NIH) reports that a vitamin D level between 20-50 nanograms/milliliter (ng/mL) is typically within the adequate range for healthy individuals. [1] Easily check your vitamin D levels with the at-home vitamin ...
Vitamin D numbers: what they really mean | Quest Diagnostics
Vitamin D tests, which include immunoassays and liquid chromatography-mass spectrometry LC/MS/MS, measure the level of 25 (OH)D, the main form of circulating vitamin D. Vitamin D levels of 30 to 100 ng/mL are considered optimal. Vitamin D levels between 20 and 29 ng/mL are considered suboptimal.