Is anyone still symptomatic with B12 serum blood test showing good levels? Has anyone then has the new Active B12 blood test which showed they were deficient? I'm very unwell at the moment but getting nowhere as my B12 serum is showing 1000. Have tried supplementing with B12 sub-ligual tabs but didn't notice any difference. Has anyone had the King's blood test done? gsts.com/new-tests.html
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