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Description
Diagnosis of B12 deficiency typically involves blood tests including a full blood count, serum B12 and folate levels

The standard route in research community use and in most published guides

CD157 is an important mediator of neutrophil adhesion and migration

Relative telomere length and mitochondrial DNA copy number variation with age: association with plasma folate and vitamin B12. Mitochondrion 51 (2020): 79-87.
