Hi Guys! I had puzzled for some time over the question of readings in the serum level, because I couldn't quite understand how it was used by the body. However, I have been directed to an article written in collaboration by the WHO and FAO, which explained that if a patient has PA or is B12 deficient (NOT due to diet) then the body cannot make proper use of the stores in the liver anyway! A Eureka moment, a light bulb went on in my foggy brain! Of course it can't, I can't absorb it.
It seems to me it doesn't matter if you have high readings or low ones, b12 in bile is useless and is simply excreted out.
the following is the link, chapter 5 , read the second paragraph following the heading 'Populations at risk for..........'
Not happy with the last sentence however, even more determined to get myself sorted
I hope that if you copy and paste the link, it should work