Three months ago It started with tingling in hands and feet. GP did blood glucose and B12. Glucose normal, B12 208. GP said both normal and did nothing. Waited six weeks as PN progressed rapidly returned to GP luckily he was on holiday. New GP did vibratory test and recognized low B12. Four weekly injections of B12 given. Regular GP still says it is not B12 and that it is normal. Symptoms have almost vanished from hands and feet. Also started oral B12 methyl cobalamin 1mg daily. Injections are finished but feel symptoms may be coming back. Do I need more injections?

Now going to Neurologist for conduction tests. What will they tell about B12?
What questions should I ask and what tests should I request?
Thanks to everyone here. It is scary to read all the posts but without this forum and pub med I would be lost. Thank God for the fact my regular GP went on holiday and the replacement was smart. Still not out of the woods as muscle twitches have started.