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HelpTest Code Vitamin B12 Vitamin B12
Abbrev
B12
Storage Temperature
F (-20ºC)
ASTM/HL7/SDF 1
SQ=B12P
EPIC=LAB67
Instrument/Location
Beckman DxI 9000
Specimen Requirements
Specimen
Type: Serum or Plasma (Lithium Heparin)
Container/Tube
Type: Gold Top or Lt. Green Top.
Collection
Instructions: Draw tube and label appropriately.
Allow Gold top tubes to clot for 30 minutes. Spin tubes within 2 hours.
Note: Hemolyzed Specimens are
not acceptable.
Specimen Transport Temperature
Spun tube/Refrigerated
Reference Values
200-900pg/ml
Methodology
2-Step Competitive
Specimen stability/Retention time
Specimens are kept in Chemistry for 7 days. This test has a specimen stability of 24 hours at 2-8 degress C.