Hi Russ,
A couple of thoughts:
– I know only a tiny bit on this….You can high folate blood serum levels and still be “deficient” in folate. Apparently, some have genetic errors getting in the way of the body’s ability to use it. If that’s the case you can use bio-availble forms of folate. Also, you can be checked to see if you have one of the these “genetic errors”
– If you supplement with B12, your serum levels will be higher. Your doc should check your homocystine and MMA levels. A better indication of your overall B12 status.
You may want to post this question on this forum.
http://neurotalk.psychcentral.com/forumdisplay.php?s=&daysprune=&f=20
This is a forum for Peripheral Neuropathy and the numbess in your feet can be the beginning of PN. There’s a lot people with solid B12/folate knowledge that may be able to shed some light on this. It’s worth asking there also.