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Vitamin B12 (Cobalamin)

Specimen Container

Gold

Specimen Collection Type

Serum

Minimum Volume To Collect (Ml)

1 mL

Pediatric Volume To Collect (Ml)

1 mL

Specimen Preparation

Allow clot, separate < 4hrs

Stability

Ambient Stability: 8 hrs
Refrig Stability: 24 hrs
Frozen Stability: 3 months

Unacceptable Conditions

EDTA plasma, Dark Green (Sodium or Lithium Heparin)

Preferred Transportation Temperature

FROZEN

Performed

Sun-Sat

Reported

Same day

Methodology

Chemiluminescent Enzyme Immunoassay

Lab Department

Core

Testing Location

IHC

Synonyms

B12, Vit B12, B12 Assay, B12 Vitamin, Vitamin B12, B12, Serum, Cyanocobalamin, CblC, Cobalamin, Methylcobalamin

Test OR Panel

Test

AOE

IsFasting

Misc Instructions

Serum is preferred when B12 and Folate are ordered together
Routine handling provides adequate light protection

Additional Requirements

LIGHT PROTECTED

Unit of Measurement

pg/mL

CPT Codes

82607

LOINC

2132-9

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