25-hydroxyvitamin D (Vitamin D)

The 25-hydroxyvitamin D blood test, also known as the Vitamin D blood test, measures the level of 25-hydroxyvitamin D in your blood. 25-hydroxyvitamin D is the main form of vitamin D circulating in your body and is used to assess your vitamin D status.

Sample Type: The test requires a small blood sample, typically obtained by drawing blood from a vein in your arm using a needle.

Normal Range: The normal range for 25-hydroxyvitamin D levels in the blood is generally between 30 to 50 nanograms per milliliter (ng/mL) or 75 to 125 nanomoles per liter (nmol/L). However, the specific range may vary slightly depending on the laboratory and the reference values they use.

Vitamin D plays a vital role in maintaining bone health, supporting immune function, and regulating various other processes in the body. Low levels of vitamin D can lead to conditions like vitamin D deficiency, which can contribute to weakened bones (osteoporosis), muscle weakness, and an increased risk of certain diseases.

If your 25-hydroxyvitamin D levels fall below the normal range, your healthcare provider may recommend further evaluation and appropriate management, such as increased sun exposure, dietary changes, or vitamin D supplementation.

It’s important to note that interpreting vitamin D levels can be complex, and additional factors such as sun exposure, geographic location, and individual health conditions can influence vitamin D status. Therefore, it’s best to consult with a healthcare professional for proper interpretation of your 25-hydroxyvitamin D test results and to discuss any necessary steps to maintain or improve your vitamin D levels and overall health.