A member asked:

I had my vitamin d tested. my d3 is 35 ng/ml but my d2 is zero! is this a problem?

4 doctors weighed in across 2 answers

No: Vitamin d2 and d3 are more or less equivalent in for the human body. As long as you total vitamin d level is above 30 ng/ml, you should be ok. See the site below for more information. http://www.mayoclinic.com/health/vitamin-d/ns_patient-vitamind.

Answered 4/3/2019

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Dr. Thomas Namey answered

Specializes in Rheumatology

D3 & D2 different!: Humans make d3 in skin with uv light. D2 comes from irradiated yeast and is prescription. While d2 is artificially made and not normally found in humans, it has the same effect on calcium absorption. But d2 and d3 are hormones and not equivalent. D3 is superior! read this scientific paper: http://www.Ncbi.Nlm.Nih.Gov/pubmed/22552031.

Answered 7/12/2013

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