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  • Vitamin D results



    Mostly copied from my response in another thread.


    Backstory: I'm pregnant (for what it's worth) and decided to start supplementing with Vitamin D to boost immunity and get all those other nice benefits we know about. So I started taking 8,000 IU / day of D3 (capsule form, not tablet). About a week after I started supplementing, I had a doctor's appointment and asked for a 25-OH serum test to determine what my "baseline" level was.


    I just got my D test results back and they are confusing to look at.


    At the top, I have a 1,25(OH)2 D test... and my result was 99* pg/mL (picograms / milliliter) . The star means "critical" but it doesn't explain what critical means.


    Look at this though:


    What blood test should I have to check my vitamin D levels?


    The only blood test that can diagnose vitamin D deficiency is a 25-hydroxy-vitamin D (25 OH vitamin D). Unfortunately, some doctors are still ordering the wrong test, 1,25-dihydroxy-vitamin D. In fact a common cause of high 1,25-dihydroxy-vitamin D is a low 25(OH)D or vitamin D deficiency. So when doctors see the 1,25-dihydroxy-vitamin D is normal or high and tell their patients that they are OK, they are often vitamin D deficient.
    from http://www.tonic.com/article/everything-you-need-to-know-about-vitamin-d-frank-lipman/


    So that's not the test to look at, and low Vitamin D levels (25-OH) can result in high 1,25 OH2 D measurement...


    Further down the page, I can see the correct test was run, and there are 3 measurements: Calcidiol, D2, and D3. According to the Vitamin D Council,

    Calcidiol

    25(OH)D (25-hydroxyvitamin D). A prehormone in your blood that is produced in the liver from the metabolism of vitamin D3 cholecalciferol. When testing for vitamin D deficiency, this is the only form that should be tested for.

    So I am ignoring the D2 and D3 numbers and just looking at my Calcidiol, which is 44 ng/mL. I was surprised it was that high because I had only been supplementing for about a week at that point! So... in a week or so I should get my follow-up test results back (blood drawn today) and if I'm around 70ish ng/mL I'll lower my dose (to about 4,000 IU/day maybe?) to try to "maintain" instead of raise my serum levels.


    I hope that helps anyone who might be asking their doctors for a 25-OH serum test too... if you can get a copy of the actual test results it might be easier to figure out than just by going on what the doc tells you about the results... the doctors at my hospital don't know much about Vitamin D and the midwife I saw today also had no clue how to read it, so I just asked for a copy and figured it out when I got home.

    Eating lots but still hungry? Eat more fat. Mid-day sluggishness? Eat more fat. Feeling depressed or irritable? Eat more fat. People think you've developed an eating disorder? Eat more fat... in front of them.

  • #2
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    Just got my test back. I'm now at 71 woot woot.

    Think I'll go to 6000IU/day now.


    The doc I had today said they recently had a workshop on supplements and was surprised to see the D test in my chart so asked me about why I was taking it, etc. We had a nice talk and he was impressed with my knowledge on the subject.

    He didn't know how to read the results though so I copied that page for him and circled the correct test/number to look at.


    He was also impressed that I was taking fish oil too and said it was almost as if I had attended the workshop. Haha. Glad they are teaching the docs about this stuff

    Eating lots but still hungry? Eat more fat. Mid-day sluggishness? Eat more fat. Feeling depressed or irritable? Eat more fat. People think you've developed an eating disorder? Eat more fat... in front of them.

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    • #3
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      what brand d3 do you take? I just got my results back before starting supplementing with d3 and they were really low. 72 nm/ol. It's the canadian reading, should be roughly 125-200. I'll get tested again in a couple months, see if the 5k/day is raising my levels or not.

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      • #4
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        FNW, how long did it take you to reach the 71 level? I've been taking Vit D for about 3-4 months now and I started with 5000 IU but have been taking about 10,000 IU for the last 2 months. I'm not due for another test for another 2-3 months at Grass Roots action. If 4 months is reasonable time period for serum Vitamin D to reach optimal level, then I should consider taking only 5000IU now.

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        • #5
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          Kasey. Will let you know when I get home and can check.

          Maba. That was about 7 weeks at 8000IU.


          Sry to be short. On phone and just got to lunch place. Starving preggo here.

          Eating lots but still hungry? Eat more fat. Mid-day sluggishness? Eat more fat. Feeling depressed or irritable? Eat more fat. People think you've developed an eating disorder? Eat more fat... in front of them.

          Comment


          • #6
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            Why take Vitamin D in a capsule when you can sit in the sun for 20 minutes in a tshirt and achieve better results?

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            • #7
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              @MichaelA: Where I live, we have sunlight for only about 2 months

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              • #8
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                Well, MichaelA, I happen to live in Minnesota. During the Winter I supplement with vitamin D because during the Dec/Jan/Feb months the temperature is rarely above freezing and often-times well below 0F. When I go outside during the few hours of bleak sunlight I try to keep AS LITTLE of my body exposed as possible and be out there for AS LITTLE time as possible. Frost-bite can happen quite quickly with the winds.


                I don't know if this applies to others posting on this thread, but it's my reasoning for supplementation.

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                • #9
                  1



                  FNW - Nice work on the results and the explanation. I've been taking 2000 IU a day and am thinking I should increase that.


                  MichaelA - Ha! Right now I would have to flirt with frostbite to get 20 minutes of sun on bare skin. ;-)


                  Which reminds me. I need a vacation.

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                  • #10
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                    Which reminds me. I need a vacation.

                    AMEN to that!

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                    • #11
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                      Is there a difference between Vitamin D and Vitamin D3?

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                      • #12
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                        It might be instructive to read the Weston Price website about Cod Liver oil, too. They are saying you have to supplement with Vit. A, too, if you are adding Vit. D because of the synergy of the two vitamins. I haven't exhaustively studied this, myself, but it might be worth a look to you.


                        Sooze

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                        • #13
                          1



                          I have heard that if your shadow is longer than you, you are not making vitamin D from the sun. Not sure how true that is but people that live in northern places like canada become deficient in the winter months even if exposing their skin to the sun.

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                          • #14
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                            At least here in Canada we can always thow some seal steaks on the BBQ when we are tired of salmon.

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                            • #15
                              1



                              MichaelA, even here in California it's been pretty chilly lately - not anything I want to go out in wearing a tank top for 20+ minutes to get sun exposure. And even if I did want to, it's fog/rain season so it's usually overcast.

                              Obviously in the spring/summer when I'm getting more sun (and more direct sun) I can reduce/eliminate the supplement (will probably just reduce), but for now, this is a pretty good thing to do.


                              Thanks TriCiCi. I know I was confused so thought posting it might help someone else.


                              CJ4400 I'm not an expert or anything but as I understand it, with Vitamin D there are basically 2 versions: D2 and D3. I think D2 is from plant/fungus sources, maybe? And it's not really used well by our bodies, and then D3 is what we synthesize from the sun and also what is stored in animal fat and such, and that's the kind we can use. So when you supplement you want D3. And always get an oil-capsule type, never a tablet. The tablets are basically useless... maybe something about not being carried in an oil/fat but I'm not sure why.


                              PrimalWannabe, you're right. You want to keep all of the fat-soluble vitamins (A, D, K, and E) in balance with each other otherwise you could set off some other issues. I do want to be a little careful with getting too much Vitamin A because of its correlation with birth defects if you have TOO much... and I figure I'm getting good fat-soluble vitamins now that I'm eating grass-fed beef (with grass-fed fat). Definitely something to keep in the back of your mind though!!!


                              PS My vitamin D is "finest natural" brand from Walgreen's. I didn't pick it because it's "the best" or the "cleanest" ingredient list. I picked it because it's what was there, in the biggest gelcaps of any brand in walgreens (2000 IU each, so fewer to swallow), and they were buy one get one free. They seem to be working fine.

                              Eating lots but still hungry? Eat more fat. Mid-day sluggishness? Eat more fat. Feeling depressed or irritable? Eat more fat. People think you've developed an eating disorder? Eat more fat... in front of them.

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