Holotranscobalamin

Sample type

Adult sample type: Serum (gold/yellow top SST)

Paediatric sample type: Serum (clear top paediatric tube)

Collection requirements: No special requirements

Cost

Price on application

Turnaround times

Frequency of analysis: Available 24 hours

Turnaround time: 24 hours

Available at: JR

Analytical method

Immunoassay

Analysis undertaken at these site(s)

JR

Reference intervals

>72 pmol/L - B12 sufficiency 

45-72 pmol/L - B12 deficiency cannot be excluded 

27-44 pmol/L - B12 deficiency is likely 

<27 pmol/L - B12 deficiency