Test directory: Vitamin B12

Ordering Code244
Test NameVitamin B12
AliasCobalamin
Preferred SpecimenSerum
Preferred ContainerSST (Gold)
Other Specimen/ContainerPlasma in Lithium Heparin (Green), Serum in Plain (Red)
Optimum Volume0.5 mL
Transport RequirementsOahu: Ambient
Airline: Refrigerated
Specimen StabilityAmbient: 12 Hours
Refrigerated: 2 Days
Frozen: 2 Months
Frozen samples should be thawed only once.
Rejection CriteriaHemolyzed, Insufficient quantity, Specimen older than stability limits
Avail. StatNO
Analytic Time1 Day
MethodologyElectrochemiluminescence Immunoassay

Reference range(s)

ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
Vitamin B12ALL232-1245232-1245pg/mL