Apologies if you read this in the Thyroid forum only I didn't realise this group existed!
I got back my results from Blue Horizon and thankfully thyroid function is good, all is in normal range. But surprisingly my B12 is low at 201 and my B9 (Serum Folate) is high at 45.23. The comments with the results say that the B9 can mask low B12.
I have had GP blood tests in the past and have never been diagnosed as B12 deficient. Could this be because of the masking and I therefore could have been deficient for a number of years? I have been vegetarian for 22 years so this is a big possibility. The reason my GP gave me for my whole list of symptoms (fatigue, zero libido etc.) was put down to a D deficiency (tested at 38) which I am currently on supplements for. But in the 6 months I've been on them I have felt no better, so if I'm honest I'm a little relieved that I have another avenue to explore. Does low vit D have any kind of affect on B9 or B12 levels? Why would my B9 levels be so high?
Also I have my next Dr's appointment in a week's time but want to start B12 supplements now to try and feel better. I understand that I should wait until next week but would the supplements raise the B12 level significantly between now and then or does it take a while?