Service Description

The Vitamin D 1,25-Dihydroxy test measures the active form of vitamin D in the blood, which plays a key role in calcium regulation, bone health, and immune function. Why it’s done: To assess calcium and phosphate metabolism To evaluate bone health and risk of osteoporosis To investigate kidney or parathyroid disorders To monitor immune system function To guide supplementation or treatment for vitamin D imbalance Specimen Type: Blood (serum or plasma) Turnaround Time: Typically 2–4 business days Collection Available: In-office or mobile blood draw services