I am not sure what the 45 refers to; is it the nmol/L level of plasma in your blood?
Whammel suggested the following article about vitamin D levels, for which I was grateful. You will see it discusses the recommended vitamin D blood levels.
I take 5000iu of Vitamin D daily at the moment. As I only started this about a month ago I will wait a further 8 weeks before taking the plasma blood test, as recommended by the Barts blog.
Have you contacted your MS nurse about the results of your blood test?
thanks for replies. yes I will be seeing my ms nurse this Friday and chat with her about it. as for my b12, I had blood test years ago after having some sensory symptons and they detected low level b12 so my doctor put me on the 3monthly injections which I am still on. ask your doctor for b12 deficiency test and see what the outcome of that is. kim