So say if someone that has a baseline blood test before they start B12. Than starts B12 subQ injections. Gets a blood test say 6 weeks down the road. Whatever the results; there not relevant?

Of course everybody's body will react differently, but to say anyone who has their blood tested before and periodically along the way and the results aren't relevant; I'm just not getting that?

Except for a few exceptions, truth is in the blood.