血清维生素 B12 水平
一般而言,血清维生素 B12 水平可分为 3 级:[1]Devalia V, Hamilton MS, Molloy AM; British Committee for Standards in Haematology. Guidelines for the diagnosis and treatment of cobalamin and folate disorders. Br J Haematol. 2014 Aug;166(4):496-513.http://onlinelibrary.wiley.com/doi/10.1111/bjh.12959/fullhttp://www.ncbi.nlm.nih.gov/pubmed/24942828?tool=bestpractice.com[2]Snow CF. Laboratory diagnosis of vitamin B12 and folate deficiency: a guide for the primary care physician. Arch Intern Med. 1999 Jun 28;159(12):1289-98.http://archinte.ama-assn.org/cgi/content/full/159/12/1289http://www.ncbi.nlm.nih.gov/pubmed/10386505?tool=bestpractice.com
维生素 B12 缺乏可能性较高:<148 pmol/L (<200 pg/mL)
可能的维生素 B12 缺乏: 148 至 258 pmol/L (201 至 350 pg/mL)
不太可能的维生素 B12 缺乏:>258 pmol/L (>350 pg/mL)