Vitamin blood test results

[Runner25]

I have Hashimotos and now have the result of recent vit tests.

Serum B12 1072 ng/l (197-771)

Serum folate >20.0 ug/l (2.1-26.8)

Serum Ferritin 63.0 ug/l (13.0-150.0)

OH Vitamin D 113.0 nmol/L 50 ->200

My Specialist noted that the B12 and folate are high but not of concern as it’s probably related to vitamin replacement?

Any thoughts would be welcome

[SeasideSusie Remembering]

Runner25

Are you taking any supplements, if so what and the dose?

If you are taking a B Complex (or Biotin) did you leave it off for 3-7 days before the test?

[Runner25 in reply to SeasideSusie]

Yes I am taking super b complex and no I didn’t stop taking it.

[SeasideSusie Remembering in reply to Runner25]

We need to stop taking B Complex (or Biotin) for 3-7 days before any blood test as it can give false results when biotin is used in the testing procedure. We don't know if the results of vitamin tests are affected by this, hence the caution to stop before any blood test.

Assuming that your results are accurate, your ferritin could be a bit better, it's recommended that ferritin is half way through range, and some experts say the optimal ferritin level for thyroid function is 90-110ug/L. Eating iron rich foods regularly may help raise your ferritin level (eg liver, liver pate, black pudding, etc). You shouldn't take iron tablets unless an iron panel has been carried out because if your serum iron and transferrin saturation are good, then supplementing with iron will very likely take them too high. Vit D is pretty good, the Vit D Society and Grassroots Health both recommend a level between 100-150nmol/L with Grassroots Health's recent blog post recommending at least 125nmol/L.

[Runner25 in reply to SeasideSusie]

Thank you for that. I’ve been a pescatarian for 40 years, so doesn’t surprise me it’s a bit low. I’ll try to eat more spinach and dried apricots though x