Hi, I wonder if anyone can help please?
I had a MMA blood test last year ( via St Thomas) as a follow on from Active b12 test. I'm wishing to do a retest, but will have to pay as my dr prefers not to get involved in case it affects the frequency of my injections. My symptoms are returning prior to my monthly injections and the further I get from my initial dose seem to lack their potency?
So I'm thinking of checking with an MMA test and have read some older questions that state urine test is actually more accurate than blood and Just wondering please if
- this is still the case with current testing methods?
-why is urine more accurate, a post indicated it is more helpful in people with neurological symptoms?
Many thanks, any ideas appreciate Don't!