Vitamin D3 25-hydroxyvitamin D test or 25(OH)D

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Needs to be this test and no other

25(OH)D blood test to test for D levels

http://www.vitamindcouncil.org/health/deficiency/am-i-vitamin-d-deficient.shtml

25-hydroxyvitamin D test

, also called a 25(OH)D. Levels should be above

50 ng/ml (125 nmol/L) year-round, in both children and adults

25(OH)D levels should be between 50­80 ng/ml (125­200 nmol/L), year-round.

Sheri