Fig. 6From: Determinants of vitamin B12 deficiency in patients with type-2 diabetes mellitus — A primary-care retrospective cohort studyNumber of additional screening tests needed before the diagnosis of B12 deficiency (through the “reference B12 test”) by duration of type-2 diabetes mellitus (n = 164 B12-deficient patients). This indicates the need for repeated screening of these patients for B12 deficiencyBack to article page