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 …

Nov 30, 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.

Sep 2, 2024 · What is the hydroxy-25 vitamin D test? The most accurate measurement of your vitamin D levels is a 25-hydroxy vitamin D test. It measures your blood level of 25-OH vitamin …

Dec 10, 2025 · Commonly known as 25(OH)D, the vitamin D test measures blood levels to diagnose deficiency or toxicity essential for bone health. Regular screening is key for risk …

Sep 28, 2025 · A vitamin D test measures your blood's vitamin D levels to see if they are too high or too low. Low vitamin D levels can increase your risk of bone disease and other severe …

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 …

Learn about the Vitamin D Test, its purpose, uses, normal values, test results interpretation, and more for a better understanding of your health.

Vitamin D Test A vitamin D test measures the amount of vitamin D in the blood. The vitamin D test is also called the 25-hydroxy vitamin D, or 25 (OH)D, test. Your body needs vitamin D to …

Vitamin D (25 Hydroxy) [VITDG2] is the preferred initial test for assessing vitamin D status in patients without renal disease. The test assesses for both vitamin D2 and vitamin D3. It is the …

What is a Vitamin D Test, Exactly? A vitamin D test is a blood test that measures the concentration of vitamin D in your body. Unlike most vitamins, vitamin D functions like a …