I got the MMA test done, with the following results:
Methylmalonic Acid148 nmol/L (range) 79 - 376 nmol/L
B121,902 pg/mL (range) 211 - 911 pg/mL
FOLATE>24.0 ng/mL>5.4 ng/mL (in case it matters)
I've been getting shots for more than 20 years and the b12 levels are now pretty normal for me. I'm now injecting once a week. Any comments appreciated.