Hello. I did the serum methylmalonic acid(MMA) test and it comes at 0,62 umol/L, Ref: 0,08 – 0,56. So, my MMA is out of range. Serum B12 comes at 997 pg/ml, without suplemention, and Homocysteine at 4,7 umol/L. Folic acid at 21,3 ng/ml. Is this a diagnosis of active b12 deficiency? I have Country Life, Methyl B12, 5000 mcg; Source Naturals, Dibencozide and methyl folate 400 mcg. I started at 1 tablet of methylb12 and half of dibencozide and fell sleepy, tired. Is this normal at the beginning? I had the MTHFR 677CT Hetero mutation. My symptoms are: - Fatigue - Brain fog - Depression - Low body temperature - Hair loss - Tremors on head at day, legs and hands when sleeping - Periodic movement limb disorder at sleeping - No - Refreshing sleep - Constipation - Joint pain and weakness on legs - Low stomach acid These symptoms correlate to b12 deficiency? How much methylb12 and adenob12 should I start to take? Thank you very much!!