Thyroid UK
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Vitamin D results

Hi there,

Just seen that these have no been loaded up on line and they are as follows:

Serum 25-Hydroxy vitamin D3 level 56.0 nmol/L

25OH-Cholecalciferol Vitamin D status

<25 nmol/L ____________ Deficient

25-50 nmol/L __________ Insufficient

50-75 nmol/L __________ Adequate

>75 nmol/L ____________ Optimum

Assay aligned with reference method used in the Vitamin D

Standardisation Programme (VDSP).

Although I seem to be in the adequate range I am guessing that I am too low with a thyroid problem. I'll be seeing my GP next week to discuss my results but would be grateful for your opinion on them..

Many thanks!

9 Replies

Nikkib1 Vit D is recommended it should be between 100-150 so with your level at 56 you should supplement with D3 5000iu daily for a couple of months then reduce to 5000iu on alternate days as a maintenance dose. Excess Vit D is stored, not excreted, so we need to retest once or twice a year to keep within the recommended level and not reach toxicity level which is 220+ according to City Assays where you can obtain a blood spot fingerprick test for £28 to keep an eye on your level

When taking D3 we also need it's co-factors which are K2-MK7 and magnesium. Vit D aids absorption of calcium from food and K2 directs the calcium to bones and teeth rather than arteries and soft tissues. Both D3 and K2 are fat soluble so should be taken with dietary fat such as the fattiest meal of the day. Magnesium is calming so should be taken in the evening.

Your GP will say your Vit D level is fine, and even if it was low enough to have it prescribed it's better to buy your own. And he won't know anything about the importance of taking K2 and magnesium alongside D3.


Thats really helpful thank you, yes you are right, the test results are marked as satisfactory even though I am only just in the adequate range. Already seeing that i am fustrated! I was thinking mag would be good for some of my other issues, sorry to be a pain but what levels of K2 and Mag would you suggest ?

Thanks again and for the link!


Nikkib1 K2-MK7 you'll normally see up to 100mcg and that would be fine. Silver fox has mentioned that you shouldn't take K2 if you're on blood thinners. Actually, it's K1 that aids blood clotting, K2 is for bone health. See my recent post to Mango_555 where I've put links about the different forms of Vit K but as always we must make up our own minds.

As for K2 and soy, definitely avoid soy oil or any form of unfermented soy, but K2 from Natto - which is fermented soy - is fine. Any form of fermented soy is fine for us Hypos, it's unfermented soy we shouldn't have.

For magnesium have a look here and you should find one which suits, then go with whatever is the recommended dose. I use Natural Calm magnesium citrate powder and the recommended serving gives 350mg magnesium.


You are quite right, it's not enough for us plus winter is approaching, daylight hours shorter so we aren't going to get help from the sun. I'd certainly be wanting to be 100-125. Often doctors think after treatment we shall be fine but we can slip back again if we don't maintain that dose we have reached. Make sure as well that you fake it with some fat as its a fat soluble vitamin and are you taking it with K2. That takes the calcium out of the blood stream and deposits it in the bone where we want it to be. Not everyone can take K2 though (must not be on blood thinners) but look it up. It helps the heart and dental problems as well. My hygienist has seen a marked improvement in the short time I've been taking K2.

I've seen K2 recommended at 100 mcg a day but make sure it is free from Soy as that doesn't help us

1 like

I had treatment for vit d3, mine was 12 when tested. At the end of the treatment it was 58 and I was told it was now fine. I'd be surprised if they treat you but you never know with a sympathetic dr, or someone who know something about vit d3.

Good luck I hope you get something positive out of your appointment.


Thank you both. I work outside all day so it's interesting it was higher. I feel quite relieved to have found this place as my dr is lovely but clearly doesn't known a lot about all this and I think will just go with the panels. At least I am now forarmed and know what I should be taking myself so I can do something about it. Although my results are off here and there and not dire I feel like death and my symptoms are quite severe so I just want to crack on with anything with the potential to help !!


Join the gang sounds like my Dr. Lovely but clueless. Wouldn't do t4 and t3 fiddly do ferritin. .. buy feeling better since started iron anyway. I'm outside all day but get deficient in d3 .. so that's kind of irrelevant


Glad your'e feeling better Sandria and I was reading a book by a DR in Florida and he said the same even his patients don't get enough Vit D so certainly not going to in Yorkshire lol



Do you know the supliment vit de from Jamieson company?


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