Forums Ask for advice B12 deficiency Reply To: B12 deficiency March 20, 2018 at 1:55 pm #377 bella 11 Posts @janey Not sure about vit D, I will ask on 29th. As far as I know test I had last week was b12 only (looked like that on the form but I am no Dr so could be wrong!) the first lot of bloods was to test for everything and there was no mention of vit D just B12.