Hello
Has anyone had high level of b12 of 6000 when being diagnosed with lung cancer? I have previously had liver cancer and my level of b12 at that time was 2000 which is high but I have done a recent blood test done which shows I am way above range 6000ng/L ? Anyone experience high levels of b12 and know if it is a cause for concern? My doctors have been useless and say everything is always fine however I have been extremely tired all the time so I cannot understand how I have so much b12. I do not take any supplements and ofcourse and I’m worried as I know it’s stored in your liver. Please let me know if anyone has experience this before or know what it means?