Thyroid UK
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Advice sought for blood tests please

Advice sought for blood tests please

I'd really appreciate any advice anyone can give re how to supplement to overcome low blood results for:

Vit D



My plan is to use 5000iU of Vit D (plus some K2 and boron as co-factors) for 3 months then retest, 28-84mg of iron daily and 5000mcg of sublingual B12 until the bottle is finished then 1000mcg but this is only based on what I've read in books (e.g. Hashimoto's Protocol) and on this site. If anyone else can advise, I'd receive any comments gratefully.

I already supplement with selenium, vit E, a B complex, folate, vit C, zinc, omega 3, magnesium and I'm on 50mg of levothyroxine for Hashimoto's.

If anyone understands any of the other tests and can tell me what they mean, I'd also be very grateful! I had asked the GP to test folate but I don't think she has, unless it's under a name I don't recognise.

With many thanks in advance.

4 Replies


Vit D isn't that low. I think 100nmol/L - 125nmol/L are considered optimal. If you are supplementing large amounts it is wise to add a little Vit K2 to direct the calcium uptaken by the Vit D to the bones.

Ferritin could be a little higher. What type of iron are you supplementing ? ? .. Are you taking each iron tablet with 500mg -1,000mg Vit C to aid absorption and help avoid constipation ?

Vit B12 levels need to be at least 500. You may need to take 1000 pg/ml in tablets, sublingual (under the tongue) or liquid as methylocobalamin as an ongoing supp..

Folate is not listed but important to get tested as frequently uses the same biochemical pathways as Vit B12 helping to create, develop and regenerate red blood cells and make iron work properly. Deficiencies in either can cause similar symptoms as they work together. Low folate should be supplemented as Methylfolate. The Vit B complex you are already taking will keep all B's in balance.

Have you dealt with any possible gut issues such as Candida or gut dysbiosis, to aid absorption of supplements ? ? ..

TPOAb's are hugely elevated. Are you gluten free ?


radd- many thanks for your advice. Much appreciated. Yes, I'm already adding K2 when I take D3 after reading about it here a week or so ago. The iron supplement I take is Floradix but it only provides 19mg of iron a day which isn't huge. I have noticed that when I stop it, my hair starts to fall out again about 3-6 months later so it must be helping though.

Thank you re suggestion of 1000mg of sublingual B12 and I will research gut dysbiosis. I don't think I have candida...but who knows! Finally, I have been 100% gluten free since my Hashi diagnosis (when the antibodies were the figure you saw.) It's really helped and I'm hoping that eventually my antibodies will fall.

Thank you so much!




VitD 88 is in the replete 75-100 range (most are happy around 100) so there's really no need to supplement D3 if you can get a little sun on your face and arms. If not, I don't think you need to supplement more than 5,000iu per week.

Not sure it's necessary to supplement iron to raise ferritin because your iron levels look good to me.

B12 547 is good and you are unlikely to be deficient with B12 >500 so I wouldn't supplement B12 either.

Thyroid peroxidase antibodies are positive for autoimmune thyroid disease (Hashimoto's). There is no cure for Hashimoto's which causes 90% of hypothyroidism. Treatment is for the low thyroid levels it causes. Many people have found that 100% gluten-free diet is helpful in reducing Hashi flares, symptoms and eventually antibodies.

High FSH is an indicator of decreased fertility


Clutter- thank you very much for your reply. I read lots of posts on this invaluable site and have learned so much from you guys. I will drop the D3 to once a week and continue with the supplements I'm taking rather than add higher doses, following your comments and those of radd. It's great to get another viewpoint. Thank you!

Gluten free has really helped my symptoms. I'm hoping eventually the antibodies will decrease as I will stick at it. Thnaks re the comments about raised fsh- I suspected I was entering the menopause (I'm 48).

Thank you once again for taking the time to reply.

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