VITAMIN D, 25-HYDROXY, TOTAL, IMMUNOASSAY

VITAMIN D, 25-HYDROXY, TOTAL, IMMUNOASSAY; 25 OH Vitamin D; Vitamin D;  25-OH; 25-Hydroxy Vitamin D; Vitamin D, 25-Hydroxy

Vitamin D (also referred to as “calciferol”) is a fat-soluble vitamin that is naturally present in a few foods, added to others, and available as a dietary supplement.

Vitamin D is essential for many bodily processes, particularly the development of healthy bones. A 25-hydroxy vitamin D test can reveal whether the vitamin D levels in a person’s blood are within a normal range.

A 25-hydroxy vitamin D test is safe and usually does not cause side effects. However, some people may feel faint or lightheaded after the test. Others may notice bruising or pain around the needle site, which may last several days.

Measurement of serum 25-OH vitamin D concentrations provide a good index of circulating vitamin D activity in patients not suffering from renal disease. Lower than normal 25-OH vitamin D levels can result from a dietary deficiency, poor absorption of the vitamin or impaired metabolism of the sterol in the liver.