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Doctors generally dont order a B12 evaluation if theres no evidence of anemia (which would be picked up on a routine blood test)

Vitamin B12 is vital for the formation of red blood cells, as well as for the proper functioning and health of nerve tissue

Managing Pernicious Anaemia in the time of Corononavirus By Willemina Rietsema, GP in Oxfordshire A time of stress and need to be creative The stresses on GPs and surgeries are immense during this coronavirus crisis

The chemical structure of cyanocobalamin contains the rare mineral cobalt (4.34%), which binds the cyano group and is located in the center of a corrin ring