Two years ago my B12 was low and my physician prescribed shots. I completed those and also took oral B12 and Complex for a while. My B12 levels were back to normal and I stopped supplementation
In Dec 2021, I had Covid and 2 months later I had routine blood tests along with B12. It was off the chart, over 2000.
My doctor wasn't concerned at all. She said since all your other tests are good, I am not worried.
Google search tells me otherwise. I might wait until June and insist on a retest to see what is happening.
Any comments anybody?