Description

Vitamin D3 testing evaluates vitamin D status, crucial for calcium absorption, bone strength, muscle performance, and immune function. Deficiency can cause fatigue, bone pain, and susceptibility to infections. Risk groups include limited sun exposure, darker skin, older adults, and malabsorption conditions. Supplementation and safe sunlight can improve levels. No fasting is necessary. Your clinician may pair this with calcium and PTH for a comprehensive view.