What Is a Vitamin D Test?
A Vitamin D test is a blood test used to measure the amount of Vitamin D present in your body. The most commonly measured marker is 25-Hydroxy Vitamin D (25-OH Vitamin D), which provides an accurate assessment of your Vitamin D status.
Vitamin D plays a crucial role in calcium absorption, bone strength, muscle function, immunity, and overall health. Testing helps identify deficiency, insufficiency, or excessive levels.
