Also known as: Cobalamin
Specimen requirements
Sample type: Serum (Serum)
Collection requirements: No special requirements
Cost
Price on application
Turnaround time
Analytical method
Immunoassay - Indirect / Competitive
Analysis undertaken at these site(s)
- John Radcliffe Hospital
- Horton General Hospital
Reference intervals
Total Vitamin B12 reference intervals
> 350ng/l - B12 deficiency highly unlikely
180 - 350ng/l - B12 deficiency cannot be excluded
< 180ng/l - B12 deficiency highly likely
In pregnancy B12 levels are significantly lower and holotranscobalamin should be used instead
