Vitamin B12
CATEGORY: LAB      MNEMONIC: VITB12
LAB: WMC
DEPT: CHEM
DAYS SET: Daily
TAT: Same day
CPT: 82607

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SYNONYMS:
     B12 ; Cobalamin

PREFERRED SPECIMEN:
     2.0 ml Gold(gel) or
     2.0 ml Green(Heparin) or
     2.0 ml Lavender(EDTA)

MINIMUM SPECIMEN:
     1.0 ml Gold(gel) or
     1.0 ml Green(Heparin) or
     1.0 ml Lavender(EDTA)

SPECIAL INSTRUCTIONS:
     A fasting specimen is preferred; if a folic acid level also is ordered, fasting is absolutely required, the specimen must be serum, and the specimen must be protected from light. Collect prior to transfusion, Vitamin B12 therapy, or Schilling test.

REFERENCE RANGE:
     211-911 pg/mL

CAUSES FOR SPECIMEN REJECTION:
     Hemolysis