(I have also posted this on the thyroid UK forum.)
I am writing on behalf of my sister for some advice. She was diagnosed with autoimmune hypothyroidism a couple of years ago and has mostly been feeling well. However, in the last few months she has been feeling very tired, her hair has been falling out, she can't lose weight, etc. She had some bloods done and what I think are the most significant results are below. She also had a thyroid function test, but it was only TSH (result was 0.08, range 0.2-2.0); no fT4).
What leaps out at me is that she is actually deficient in Vitamin D, folate and B12 (as evidenced by a just-below range reading and over range MCV).
Her GP proposes to treat the folate deficiency alone and observe the B12 levels; they propose to do nothing about the vitamin D deficiency, although this is something my sister has suffered from on a regular basis.
We are going on holiday together to France shortly and I have said that I am happy to pay for her to have some private bloods done while we're there as it's very easy and pretty cheap. What should I consider asking for? I thought fT4, gastric parietal cell antibodies, intrinsic factor antibodies.
I note also that her ferritin could be better, although depressingly classed as normal. I will be recommending to her that she self-supplements; what is a good choice for not much money?
I seem to recall reading that treatment of a folate deficiency shouldn't begin if there's a B12 deficiency in the offing as well. Is that right?
As an aside, I carry the MTHFR mutation (compound heterozygous) but it doesn't seem to affect my ability to recycle B12 for some reason; my levels are relatively okay (mostly hovering around 500-600 or so). Might this also be a factor in my sister's problems?
Any advice very gratefully received; she's really not well at the moment.