Hi, I read your post with much interest. I have been taking 5000 of the Methyl B-12 every day for about 7 years now. I have never stopped taking it before a blood test. I have diabetic neuropathy but have no symptoms (I attribute this to my faithfully taking my Methyl B-12). Now I don't know if you should do this or not do this, and I don't know what PCS is? And God Bless you for following your diet. That must be SO hard.

But I am glad your B-12 levels are up. I started with Jarrows but now I get it from Puritans Pride because for me, it's more economical.

I wish you well.

Melody