I see this is an old thread, but the question asked alerted me to two things found on my blood word, Borderline B-12 (for which I am now taking B-12, 3000 mcg, sublingual), and an elevated anti-HDS which is actually associated with atonal sensory neuropathies. The sensory neuropathy has been my operating diagnosis. I could not find any info on-line about possible treatment for the elevated anti-HSD. Is there any information you have on this? Thanks.