I am new to this page and have myself today just been for second blood test to check for myself if I am B12 deficient - had bloods taken last week but the lab requested that the B12 specifically was tested for again - I will get my results probably on Monday. I am just pre-empting those results as my husband was tested a couple of weeks ago ( having self-diagnosed) and was found to have a level of only 30! I have not seen a level this low on any web pages I have found. He will have his 6th injection tomorrow but has already been told by the GP to just take supplements after that, and no mention of having to be re-tested at any point. Does anyone have any views on this? and is this level extremely low in your experience?