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Test Code B12 Vitamin B12

Collection Container

Serum gel

Specimen Required

Serum

Other Acceptable Specimen Types

Heparinized or EDTA Plasma

Specimen Volume

0.5 mL

Minimum Specimen Volume

0.3 mL

Transport Temperature

Refrigerate

Specimen Stability

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

Reasons for Rejection

Grossly hemolyzed

Methodology

Electrochemiluminescence immunoassay (ECLIA)

Days and Times Performed

Test performed daily

Turnaround Time

24 hours

Reference Ranges

232 - 1245 pg/mL

Units of Measure

pg/mL

CPT Code

82607

LOINC Code

2132-9

EMR Interface Order Code

10476