Where results are borderline, measurement of methylmalonic acid (MMA) or holotranscobalamin (active B12) may help clarify the picture, as recommended in NICE CKS guidance on B12 and folate deficiency anaemia
There is the possibility you have been told your B12 is normal
Both are essential for survival, yet they operate on different sides of the cellular equation
Efficacy and safety of co-administered once-weekly cagrilintide 2.4 mg with semaglutide 2.4 mg in type 2 diabetes: a multicentre, randomised, double-blind, active-controlled, phase 2 trial Frias JP, Deenadayalan S, Erichsen L, et al
Discreet Packaging Sealed, tamper-evident vials shipped in plain packaging with responsive native English support