Guide to Diagnostic Tests
Vitamin B12
Test/Range/Collection
Vitamin B12, serum or plasma
170–820 pg/mL
[121–600 pmol/L]
SST, red, green
$$
Serum vitamin B12 specimens should be frozen if not analyzed immediately.
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Citation
Nicoll, Diana, et al. "Vitamin B12." Guide to Diagnostic Tests, 7th ed., McGraw-Hill Education, 2017. Emergency Central, emergency.unboundmedicine.com/emergency/view/GDT/619067/all/Vitamin_B12.
Nicoll DD, Lu CMC, McPhee SJS. Vitamin B12. Guide to Diagnostic Tests. McGraw-Hill Education; 2017. https://emergency.unboundmedicine.com/emergency/view/GDT/619067/all/Vitamin_B12. Accessed May 18, 2025.
Nicoll, D., Lu, C. M., & McPhee, S. J. (2017). Vitamin B12. In Guide to Diagnostic Tests (7th ed.). McGraw-Hill Education. https://emergency.unboundmedicine.com/emergency/view/GDT/619067/all/Vitamin_B12
Nicoll DD, Lu CMC, McPhee SJS. Vitamin B12 [Internet]. In: Guide to Diagnostic Tests. McGraw-Hill Education; 2017. [cited 2025 May 18]. Available from: https://emergency.unboundmedicine.com/emergency/view/GDT/619067/all/Vitamin_B12.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC
T1 - Vitamin B12
ID - 619067
A1 - Lu,Chuanyi Mark,
AU - Nicoll,Diana,
AU - McPhee,Stephen J,
BT - Guide to Diagnostic Tests
UR - https://emergency.unboundmedicine.com/emergency/view/GDT/619067/all/Vitamin_B12
PB - McGraw-Hill Education
ET - 7
DB - Emergency Central
DP - Unbound Medicine
ER -
