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I was tested three months ago at my doctor's office and the results came back at 58 ng/ml. I had been taking (and continue to take) 5000 IUs a day. My diet, sun exposure and health haven't changed but the results from the home Vitamin D kit came back at 34.6 ng/ml. What would cause this large difference? I was really surprised – especially since the increase to 5000 IUs had changed my earlier levels from 37 to 58.

Asked by  SMAC195637008300 on May 25, 2017

Answers
  •  SMAC195637008300 on

    See title

    Answered by  SMAC195637008300 on
  •  IAW on

    Depending on how well you complete the kit, the kit has a 90-95% confidence. This does not explain the difference you have at the moment.
    You said you were taking and continue to take 5000iu? Did you switch “brands” of Vitamin D?
    You said your health and eating habits are the same. Do you take any medications and did amounts or types change?
    Did taking the Vitamin D give you “more energy” and therefore you do more physical labor now OR exercise or exercise more?
    Have you gained any weight?
    Did you have any “bad colds” during this time period or under any kind of abnormal “stress” that you do not normally have?

    Answered by  IAW on
    •  SMAC195637008300 on

      Thank you for the reply. I haven’t changed brands of Vitamin D, although I started a new bottle of the same brand. I read that sometimes there are “variations” even within a brand so I have ordered the Biotech brand to try. I haven’t changed medications although, now that I think about it, I did add a low-dose zinc/copper supplement to my regimen. Interestingly (at least to me), I increased my levels to 58 while I was fighting a lung infection. I was pretty much a couch potato during that time and have since returned to my regular exercise program, which I would classify as moderate (walking, resistance training 2x/week, yoga/Pilates 3x/week). I’ve gained a few pounds but intentionally since I lost weight while sick. And I have a low BMI. (I’m 5’4″ and 107 pounds. Normal weight is 110-112.) It sounds as if there are many things that can affect the Vitamin D level. Perhaps my course of action should be to continue with 5000 IUs and see if I can raise the level again as I did before, using the home test kit to verify. Thank you for any other information or suggestions.

      Answered by  SMAC195637008300 on
  •  IAW on

    So there should not be any “variations” with Biotech. I cannot speak for the other company and it could be that simple as to why the level change.
    The “zinc” is a co-factor for Vitamin D and therefore if you were low than adding it could have “used up” some Vitamin D. If you don’t mind me asking how much “zinc” did you add and does anything else you take (besides food) have zinc in it and how much?
    You would have thought that having the lung infection would have made the levels low so that is “odd”.
    I have no scientific proof that Vitamin D levels go lower with increased exercise. I suspect they do because muscles use a lot of Vitamin D. So this is just my opinion but now that you are back to “not being a couch potato” maybe that is the cause.
    Weight can affect levels but not in your case. I was looking more for did you gain 20lbs or more.
    So I guess if you can stick with the Biotech and retest in two months and see what happens. It is “summer” now and even a little sunshine will add to the 5000iu. I would not worry about this unless your levels get really high. So for example let’s say in two months your level is 65ng/ml. I would keep taking the 5oooiu and then try and retest in November or December. This way you can make sure your level is OK in the winter.
    You can always come back later and get more advice if those levels don’t change.

    Answered by  IAW on
  •  SMAC195637008300 on

    I added 15 mg. of zinc and was already getting 5 mg. in my daily multivitamin so my intake, not including food, is at 20 mg now. One other thing I thought of (this is kind if like putting together a jigsaw puzzle) is, while the lung INFECTION cleared up (per the doctor) and thereafter my D level tested at 58, I had some ongoing congestion to the point that my right lower lobe collapsed. I simply coughed up the obstruction and my lung re-inflated but I don’t know how long the lobe was collapsed. It was after this event that I used the home test kit – about 7 weeks later in fact. Could my body have used up a lot of my Vitamin D in that situation, perhaps to keep any infection at bay? In any case, I’ll continue with the 5000 IUs daily plus sunshine (now that it’s here) and retest in a couple of months. Thank you so much for your replies. I really applaud the Vitamin D Council for offering this service on such an important and critical topic!

    Answered by  SMAC195637008300 on
  •  IAW on

    It could be the last thing that you described that “used up” some Vitamin D! If you ever have any other major events (and I hope you don’t) take some “extra” vitamin D for a while!

    Answered by  IAW on

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