Hi, can anyone point me in the direction of a peer-reviewed paper that deals with low B12 levels in range and the need to supplement if the patient is symptomatic.
My 87-year-old father has recently been tested twice for both B12 and Folate, with the following results:
8 August 2017
B12 380 (223-1132)
Folate 4.1 (3.9-20)
31 October 2017
So, the B12 has slightly increased but the folate has decreased and is now below range (despite my Dad eating more folate-rich foods of late).
It's a bit of a mystery. I accompanied by Dad to his appointment with his GP in late July and the doctor was going to trial him on B12 but has since reneged on that. He does, however, want his folate testing again in three weeks.
He hasn't had any thyroid testing (the last time being 2014 when it was low in range so ideal) and his ferritin levels are very good.
I would like to go again with my Dad when he sees the GP and go armed with good evidence that Dad should be given a B12 trial. I really don't know why it's so difficult!