Vitamin D Testing

Vitamin D testing measures the level of vitamin D in your blood, typically through a blood sample. It helps determine if you have enough vitamin D for healthy bones, immune function, and overall health. Low levels can lead to issues like weakened bones or increased infection risk, while high levels may cause toxicity. The most common test looks at the amount of 25-hydroxyvitamin D, the main form of vitamin D in the blood. Results guide healthcare providers on whether you need supplements, lifestyle changes, or further investigation. Regular testing is especially recommended for those at risk of deficiency, such as limited sun exposure or certain medical conditions.