Thanks for posting this. I have been struggling to get correct treatment for b12 deficiency since July. I am fairly certain mine was masked for some time because of high folate.
In the beginning, I went to the ER on two separate occasions for dizziness and hearing loss and they told me to take Dramamine and drink more Gatoraid and that everyone who comes in here complains about fatigue. My symptoms progressed and finally on the 3rd visit, they ordered blood work and my red cell size was off the charts as well as other indicators. I got a letter in the mail a week later from my HMO telling me to immediately start taking b12 and folic acid. By this time neurological damage had been done.
Unfortunately, nerve damage has occurred and by the time an actual b12 serum test was done, my b12 levels " were in range" Still have the macrocytosis, and finally after a three month wait, had an appointment with a neurologist. Waiting on more follow up.
I decided to research and had 23andme testing. No surprise that I'm ++ on several important b12 methylation SNP's. It's still new to me and from this point on, I will proactively look out for me and tell the so called allopathic experts what they need to know about b12. The neurologist had no clue about the snp's and wouldn't even look at them. After I get the MRI results, I'm going to write the HMO an informative letter about their failure to provide timely services and lack of qualified MD's. Don't get mad, get even!