Vitamin D is a fat-soluble vitamin that is naturally present in very few foods added to others and available as a dietary supplement. It is also produced endogenously when ultraviolet rays from sunlight strike the skin and trigger vitamin D synthesis. Vitamin D obtained from sun exposure food and supplements is biologically inert and must undergo two hydroxylations in the body for activation. The first occurs in the liver and converts vitamin D to 25-hydroxyvitamin D [25(OH)D] also known as calcidiol. The second occurs primarily in the kidney and forms the active metabolite of vitamin D 1,25-dihydroxyvitamin D [1,25(OH)2D] also known as calcitriol.

Vitamin D analysis

Vitamin D is a fat-soluble vitamin that is naturally present in very few foods added to others and available as a dietary supplement. It is also produced endogenously when ultraviolet rays from sunlight strike the skin and trigger vitamin D synthesis. Vitamin D obtained from sun exposure food and supplements is biologically inert and must undergo two hydroxylations in the body for activation. The first occurs in the liver and converts vitamin D to 25-hydroxyvitamin D [25(OH)D] also known as calcidiol. The second occurs primarily in the kidney and forms the active metabolite of vitamin D 1,25-dihydroxyvitamin D [1,25(OH)2D] also known as calcitriol.

vitamin d3 test cost

Vitamin D is a fat-soluble vitamin that is naturally present in very few foods added to others and available as a dietary supplement. It is also produced endogenously when ultraviolet rays from sunlight strike the skin and trigger vitamin D synthesis. Vitamin D promotes calcium absorption in the gut and maintains adequate serum calcium and phosphate concentrations to enable normal mineralization of bone and to prevent hypocalcemic tetany. It also helps maintain muscle strength and neuromuscular function.

vitamin d3 test kit

A vitamin D test is a blood test that measures the level of vitamin D in your body. Vitamin D is a nutrient that is essential for bone health. It is also important for immune system function and for maintaining healthy levels of calcium and phosphorus in the blood. A vitamin D test is used to diagnose vitamin D deficiency or insufficiency. It can also be used to monitor vitamin D levels in people who are being treated for vitamin D deficiency.