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Vitamin D Testing

Analytical & Clinical Conundrums


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Various Vitamin D Tests

Slide 9

January 2009

So, we have three pools of vitamin D in circulation: Vitamin D, 25-hydroxy vitamin D, 1,25-dihydroxy vitamin D. Vitamin D test is commonly not used in clinical laboratories. Most of the time, vitamin D status is determined by measuring 25-hydroxy vitamin D in the clinical labs and is the recommended test and is a test of the choice for determining vitamin D status. 1,25-dihydroxy vitamin D should be used only in rare situations.

Various Vitamin D Tests


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