Hi I have been under a new GP in my practise who did blood test & my B12 level was 224. I have had 3 sets of loading B12 injections so 18 in total and have an appointment with a haematologist in 2 weeks. Are there specific test they should be doing as been told they will not do an active B12 test on the NHS. I do have private insurance should I be using this to get the correct test done. Also no relief from pins and needles in hands & feet also get a lot of really painful cramp in my calfs and just above my ankles. Really getting to the stage where I don't think anything is doing me any good. Foggy head, forget things all the time, very bad tempered & can snap at the least thing. Any advice welcome, even thinking of self injecting but no idea what I should buy including needle size. Willing to try anything as also putting on weight dispite not being hungry half the time.