I have been on Fred's protocol for a while now but I am still getting symptoms. I am starting to think that they may not be related to b12 after all. My symptoms include- severe brain fog headaches muscle burning (especially in legs) dizzy turns feeling off balance generel tiredness I have had a lot of blood test which have all came back normal. I'm pretty sure my doctor thinks it's all in my head. I was hoping that if I posted the results someone would be kind enough to give me a second opinion and let me know if there are other tests I should ask for. Rheumatoid factor- 9.7 Eu/mL (0.0-20.0) Eryhrocyte sedimentation- 5 mm/hr (1-20) Serum vitamin B12- >2000 Serum folate- >20 Serum ferritin- 53.7 ng/mL (14.0-186.0) Serum creatine kinase level- 46U/L (25-200) serum alanine aminotransferase level- 23 U/L (5-55) serum alkaline phosphate- 44 U/L (30-130) serum bilirubin level 5 umol/L (0-21) Serum albumin 45 g/L (35-5) Serum sodium 139 mmol/L (133-146) Serum potassium 4.5 mmol/L (3.5-5.3) Serum chloride 102 mmol/L (95-108) Serum bicarbonate 26 mmol/L (22-29) Serum urea level 4.2 mmol/L (2.5-7.8) Serum creatinine 73 umol/L (60-100) Estimated egfr >59 Plasma C reactive protein <6 Free T4 level 18.5 pmol/L (9.0-21.0) Serum TSG level 1.38 mU/L (0.20-5.00) Serum cortisol 617 nmol/L (280-720) Anti-nuclear antibody level- Negative I just don't understand how I can feel so bad but all my tests are normal. I'd love to know if there are any other tests I could ask my doctor for. I really want to get to the bottom of this.