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HelpTest Code B12 Vitamin B12
Specimen Type
Blood
Preferred Collection Container
GRN-PSTCollection Volume
5 mL
Minimum Collection Volume
1 mL
Collection Instructions
Routine venipuncture
Rejection Criteria
Specimen not centrifuged within 6 hours of collection; Gross hemolysis, gross icterus, improperly labeled specimen
Specimen Storage and Stability
Stable up to 24 hours at 2-8 C
Turn Around Time
1 day
Lab Department
Chemistry
Alias
B12; Vitamin B12, Serum; B12, Serum;
EPIC Code
LAB67
Acceptable Collection Container
GRN-PST, SST, R-NoGel, G-NoGel
Patient Preparation
Fasting specimen preferred; must draw before Schilling’s test, transfusions or B12 therapy is started.
Additional Information
Transfer at least 0.5 mL (500 ul) of serum to an aliquot tube. Tighlty stopper the tube immediately. Specimen can be stored Ambient for no longer than eight hours. If tran
Day(s) and Time(s) Performed
Monday through Sunday, 24 hours