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Vitamin B12

Methodology

Ortho Vitros 7600, Competitive binding Immunoassay technique

Performing Laboratory

Heart of the Rockies Regional Medical Center

Specimen Requirements

Specimen Type: Plasma/serum

Container/Tube:

Plasma: Light-green top or Lavendar top

Serum: Yellow top, tiger top or red top

Specimen Minimum Volume: 1 mL

Specimen Transport Temperature

Ambient/Refrigerated OK

Reference Values

239-931 pg/mL (ng/L)

Levels above 300 or 400 pg/mL are rarely associated with B12 deficiency induced hematological or neurological diseases respectively. Further testing is suggested for symptomatic patients with B12 between 100 and 300 pg/ml(ng/L)

Day(s) Test Set Up

M - F

Test Classification and CPT Coding

82607