Cobalamin Deficiency in Elderly Patients: A Personal View
Table 1
Definitions of cobalamin (vitamin B12) deficiency [5–7].
(i) Serum cobalamin levels <150 pmol/L and
clinical features and/or hematological anomalies related to cobalamin
deficiency
(ii) Serum cobalamin levels <150 pmol/L (<200 pg/mL) on 2 separate occasions
(iii) Serum cobalamin levels <150 pmol/L and
total serum homocysteine levels >13 μmol/L or methylmalonic acid
levels >0.4 μmol/L (in the absence of renal failure and folate and vitamin
B6 deficiencies)
