Vitamin D 25-OH

About Test

The Vitamin D 25-OH test measures the level of 25-hydroxyvitamin D in the blood. This form of vitamin D is the main circulating form of the vitamin and serves as an indicator of overall vitamin D status in the body. Vitamin D is essential for maintaining bone health by aiding in the absorption of calcium and phosphorus, and it also plays a role in immune system function.

This test is commonly used to diagnose and monitor vitamin D deficiency or insufficiency, which can lead to conditions such as osteomalacia (softening of the bones), rickets (in children), and an increased risk of fractures. Deficiency can result from inadequate dietary intake, limited sun exposure, or absorption issues.

Monitoring 25-OH vitamin D levels helps healthcare providers assess vitamin D status, guide dietary recommendations, and determine the need for supplements to support bone health and overall well-being. Regular testing is important for individuals at risk of deficiency, particularly those with limited sun exposure, specific medical conditions, or dietary restrictions.