Vitamin D Testing - Cigna

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Vitamin D is a fat-soluble vitamin. Very few foods naturally contain Vitamin D (fatty fish and eggs are the exception), so Vitamin D is obtained primarily through fortified foods or supplements and dermal synthesis from exposure to sunlight. Vitamin D has two forms, ergocalciferol (Vitamin D2) and cholecalciferol (Vitamin D3), and

  Vitamin, Vitamin d