Singapore General Hospital will NEVER ask you to transfer money over a call. If in doubt, call the 24/7 ScamShield helpline at 1799, or visit the ScamShield website at www.scamshield.gov.sg.

Help Us Improve Your Experience:

We’d love to hear from you! Rate the SGH website and share your feedback so we can enhance your online experience and serve you better. Click here to rate us

VITAMIN B12, SERUM

Synonym(s):
Lab Section Category
View write-up
Specimen Required

​3 mL plain blood

Method

​Immunoassay

Reference Interval / Value

​From 0 day : 145 - 637 pmol/L

Turnaround Time

​Mean = 4 hrs, Range: 3 - 5 hrs

Day(s) Test Set up

​Daily

Last Updated - 13 Jun 2025