] I would recommend Vit.B12 supplementation even if your B12 is on the low end of the normal range. [removed
] Yes, some of the symptoms you have described CAN BE present with a low-end normal range number.
My question for the M.D. would be, why? Is there something going on to deplete your B12? Are you a STRICT Vegan? Are you a post op gastric bypass patient? Do you have digestive issues? DO you have other medical issues depleting your B12 levels?
In my opinion, IM injections are the way to go until you get your B12 levels higher.