i suspect that I may have low stomach acid for various reasons; previous B12 tests have shown low-normal levels. I have been supplementing with 1000mcg sublingual tablets a day and have seen an improvement.
My GP is amenable to testing for gastric parietal cell and intrinsic factor antibodies. Should I stop taking my B12 tablets before testing? Would the results be affected by taking them close to the test?
Many thanks
Jo