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  • Vitamin D (25-hydroxy-vitamin D)

Vitamin D (25-hydroxy-vitamin D)

SKU: 081950
$59.50
$59.50
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Vitamin D is a group of fat-soluble pro hormones (meaning that it has no hormone activity itself). Vitamin D is converted to the active hormone 1,25-Dihydroxy through a tightly regulated synthesis mechanism. Vitamin D plays an important role in the maintenance of organ systems. Vitamin D regulates the calcium and phosphorus levels in the blood by promoting their absorption from food in the intestines, and by promoting re-absorption of calcium in the kidneys. It promotes bone formation and mineralization and is essential in the development of an intact and strong skeleton. Although, at very high levels it will promote the reabsorption of bone. Vitamin D also inhibits parathyroid hormone secretion from the parathyroid gland.
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Also known as:Ergocalciferol (Vitamin D2); Cholecalciferol (Vitamin D3); Calcidiol (25-hydroxyvitamin D[25(OH)D]); Calcifidiol (25-hydroxy-vitamin D); Calcitriol (1,25 dihydroxy-vitamin D [1,25(OH)(2)D]) Formal name:25-hydroxyvitamin D; 1,25 dihydroxyvitamin D Related tests:Calcium; Phosphorus; PTH; Magnesium; Bone Markers; Trace Minerals Why Get Tested?To determine if you have a vitamin D deficiency; if you are receiving vitamin D supplementation, to determine if it is adequate

When to Get Tested?When you have an abnormal calcium, phosphorus, and/or parathyroid hormone level; when you have evidence of bone disease or bone weakness; when you are at high risk of deciency or your doctor suspects that you might have a vitamin D deficiency; prior to starting drug treatment for osteoporosis; periodically to monitor treatment of vitamin D deficiency

Sample Required?A blood sample drawn from a vein in your arm

Test Preparation Needed?None

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