Test directory: Vitamin B12 / Folate

Ordering Code270
Test NameVitamin B12 / Folate
AliasCobalamin/Folic Acid
Preferred SpecimenSerum
Preferred ContainerSST (Gold)
Other Specimen/ContainerSerum in Plain (Red)
Optimum Volume0.7 mL
Collection InstructionsFasting recommended, but not required
Avoid prolonged exposure to light.
Transport RequirementsOahu: Ambient
Airline: Refrigerated
Specimen StabilityAmbient: 2 Hours
Refrigerated: 2 Days
Frozen: 1 Month
Rejection CriteriaHemolyzed, Insufficient quantity, Plasma, Specimen older than stability limits, Prolonged exposure to light, Received ambient >2 hours old
Avail. StatNO
Analytic Time1 Day
MethodologySee individual analytes

Reference range(s)

ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
Vitamin B12ALL232-1245232-1245pg/mL
Folate, SerumALL>3.1>3.1ng/mL