能够正常吸收游离Vit B_(12)的人,可能对食物中B_(12)的吸收不完全,这在胃大部切除及胃酸分泌受到抑制的病人中尤为显著。本文作者在一组无明显VitB_(12)缺乏的临床及实验室证据而具高血清胃泌素及低血清B_(12)的病人中,用计算~(57)Co标记Vit B_(12)吸收总数的方法发现,在94例低血清B_(12)且无胃部手术病史的患者中,44例对食物结合及游离B_(12)的吸收正常(A组),30例对食物结合它们的吸收均减少(B Absorption of B 12 in the diet may be incomplete, as is the case with those who freely inhaled Vit B 12, which is particularly pronounced in patients with subtotal gastrectomy and inhibition of gastric acid secretion. In a panel of patients with high serum gastrin and low serum B 12 without evidence of clinically and laboratory evidence of vitamin B 12 deficiency, we calculated vitamin B 12 absorption with ~ (57) Co The total number found that among 94 patients with a history of low-serum B 12 and no stomach surgery, 44 had normal food-bound and free B 12 absorbed (group A) and 30 had food-bound Absorption is reduced (B