After a recommendation to read about B12 deficiency I have a few questions...
If I take it as read that B12 is important then.....
Correct Folate levels helps ensure that the B12 is converted from inactive to active forms which my body can use.
Once B12 levels increase (through injection or natural production by correcting folate for example)_ then Iron (Ferritin) use increases due to increased red blood cell production.
So you need to correct folate (1st ?) to see if this corrects B12. If not then take B12 injections (as I understand normal vitamin tablets are useless?). But you also need Ferritin (so normal Iron tablets? I thought this was dangerous to take too much iron?)
My serum results (*acknowledging the better active B12 test (which I have not had tested))
(Range in brackets)
Folate (4.6-18.7 μg/L) 4.9 ug/L
Ferritin (15-350) 86 ug/L
B12 (160-925ngL) 481 ng/L
As they were all "normal" I've never looked at these results again, until now.
I guess the key would be to get a set done with active B12 (so I know if the "normal" level about is active or non-active form of B12)