In Jan 2012 my B12 and iron were tested and were found to be within 'normal limit'. They were both at the very low end of the scale. Sorry to sound paranoid here, but do we have a similar situation with these as we do with TSH with regards to what is normal. If you are within the scale, regardless of where with regards to B12 and iron, does this mean that you are ok or if you are at the lower end of the scale might you need supplements.
I'm just about to ask if I can have B12 and iron tested again and would like to understand a bit more about them.