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    Vitamin D levels

    At the time of my diagnosis, two years ago, my vitamin d tested at about 35. I have been taking 5000 mg of D3 fairly consistently for about a year, and my recent blood test showed a level of around 48.
    What is optimal? Any suggestions?

    #2
    Here's a post Tara did back on June 20 that may at least partially answer your questions:

    http://www.msworld.org/forum/showpos...0&postcount=15

    If you scroll back through the pages on this forum, you'll find many threads on Vitamin D. It seems as though getting your level tested regularly while you're on a high-dose regimen is a common theme.

    Hope this helps!

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      #3
      Many of the posts in this forum have given vitamin D test results as a number without explanatory units, e.g., 30. For some test results that would be OK. But for vitamin D, that's not adequate because vitamin D levels can be measured in two different units: ng/ml or nmol/L.

      Without a unit stated, it's very difficult to know whether the level is adequate.

      There is research that indicates that MS patients do better when their level of vitamin D is at least 100 nmol/L. However, many lab tests come back in ng/ml.

      The conversion factor is approximately 1 ng/ml x 2.5 = 1 nmol/L. (I did not calculate that myself. I got it from a vitamin D forum, and the conversion sounds reasonable.)

      So, to get to a minimum of 100 nmol/L requires ng/ml of at least 40 (40 ng/ml x 2.5 = 100 nmol/L).

      A number like 75 without a unit can be even more confusing. It's close enough to 100 to suggest that it might be nmol/L (and thus below the recommended minimum, requiring that the level be raised). But if that 75 is ng/ml, 2.5 times that is about 188 nmol/L (well above the recommended minimum, so OK). So what to do? That demonstrates why knowing the unit of measurement is important.

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        #4
        Originally posted by Redwings View Post
        Many of the posts in this forum have given vitamin D test results as a number without explanatory units, e.g., 30.

        Without a unit stated, it's very difficult to know whether the level is adequate.
        In a past thread I gave my test results for vitamin D but not the unit. My vitamin D is 16 ng/ml. Normal range is 32 -100 ng/ml (per LabCorp)
        Diagnosed 1984
        “Lightworkers aren’t here to avoid the darkness…they are here to transform the darkness through the illuminating power of love.” Muses from a mystic

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