Vitamin D includes many subgroups or subfamilies, however from the medical perspective, only a few are important. Many routine foods like milk, fish, egg, cod liver oiland more are considered high on vitamin D3 which binds the vitamin D receptors with high affinity. The test may be required when a person has symptoms of vitamin D deficiency, such as bone malformation in children (rickets) and bone weakness, softness, or fracture in adults, 25-hydroxyvitamin D usually is ordered to identify a possible lack of vitamin D.
Why get tested:
To determine if the Vitamin D deficiency exists.
To evaluate evidence of bone conditions and bone weakness.
To assess the risk of osteoporosis and also monitor its treatment.