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Test Code B12 Vitamin B12

Collection Container

Serum gel

Specimen Required

Serum

Specimen Volume

0.5 mL

Minimum Specimen Volume

0.3 mL

Other Acceptable Specimen Types

Heparinized or EDTA Plasma

Transport Temperature

Refrigerate

Specimen Stability

Room temperature: 1 day, Refrigerated: 6 days, Frozen: 2 months

Reasons for Rejection

Grossly hemolyzed

Days and Times Performed

Test performed daily

Turnaround Time

24 hours

Methodology

Electrochemiluminescence immunoassay (ECLIA)

Reference Ranges

232 - 1245 pg/mL

Units of Measure

pg/mL

LOINC Code

2132-9

CPT Code

82607

EMR Interface Order Code

10476