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Information on the latest vitamin D news and research.

Find out more information on deficiency, supplementation, sun exposure, and how vitamin D relates to your health.

An endocrinologist just advised that only the Vitamin D 1,25 Dihydroxy (Calcitrol) Blood Test is accurate. Why are you suggesting the Vitamin D, 25-Hydroxy Test?

Ask the Vitamin D Council

Asked by  Anonymous on October 15, 2015