Vitamin B12: Deficiency of 2-3 micrograms of this vitamin can damage major organs of the body; know more | The Times of India
![Diagnostic reliability of serum active B12 (holo-transcobalamin) in true evaluation of vitamin B12 deficiency: Relevance in current perspective | BMC Research Notes | Full Text Diagnostic reliability of serum active B12 (holo-transcobalamin) in true evaluation of vitamin B12 deficiency: Relevance in current perspective | BMC Research Notes | Full Text](https://media.springernature.com/lw685/springer-static/image/art%3A10.1186%2Fs13104-022-06224-8/MediaObjects/13104_2022_6224_Fig1_HTML.png)
Diagnostic reliability of serum active B12 (holo-transcobalamin) in true evaluation of vitamin B12 deficiency: Relevance in current perspective | BMC Research Notes | Full Text
![Human vitamin B12 absorption measurement by accelerator mass spectrometry using specifically labeled 14C-cobalamin | PNAS Human vitamin B12 absorption measurement by accelerator mass spectrometry using specifically labeled 14C-cobalamin | PNAS](https://www.pnas.org/cms/10.1073/pnas.0601251103/asset/1e4e8e54-7727-47e5-a323-623933134834/assets/graphic/zpq0140618250005.jpeg)
Human vitamin B12 absorption measurement by accelerator mass spectrometry using specifically labeled 14C-cobalamin | PNAS
![Hydroxocobalamin V. Prolonged Maintenance of High Vitamin B12 Blood Levels following a Short Course of Hydroxocobalamin Injections - ScienceDirect Hydroxocobalamin V. Prolonged Maintenance of High Vitamin B12 Blood Levels following a Short Course of Hydroxocobalamin Injections - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S0006497120627409-gr1.jpg)
Hydroxocobalamin V. Prolonged Maintenance of High Vitamin B12 Blood Levels following a Short Course of Hydroxocobalamin Injections - ScienceDirect
![Diagnostic reliability of serum active B12 (holo-transcobalamin) in true evaluation of vitamin B12 deficiency: Relevance in current perspective | BMC Research Notes | Full Text Diagnostic reliability of serum active B12 (holo-transcobalamin) in true evaluation of vitamin B12 deficiency: Relevance in current perspective | BMC Research Notes | Full Text](https://media.springernature.com/lw685/springer-static/image/art%3A10.1186%2Fs13104-022-06224-8/MediaObjects/13104_2022_6224_Fig2_HTML.png)