Had a routine blood test to establish baseline bloods prior to starting on Mycophenolate (I have a recent diagnosis of SLE overlapping with MCTD) and my GP called to say I had enlarged red blood cells which could be down to any number of factors (including lab error) but on next weekly blood test she wanted to include screens for thyroid function and vitamin B12 levels (both of which have always been normal previously). I read up on vitamin B12 blood tests and found that current thinking is that blood serum levels of Vitamin B12 are a poor indicator of Vitamin B12 deficiency and that other tests need to be carried out instead - as detailed in this letter from the Homerton hospital in London (see link). I'll wait to see what my blood serum B12 levels are but will be asking my GP to test further if I fall within the limits mentioned in this letter. Anyone else had MMA tested?
Last edited by tcogb
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