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HelpTest Code 62871544 Vitamin B12 Level
Performing Laboratory
Torrance Memorial Laboratories
Specimen Requirements
Submit only 1 of the following specimens:
Hospital Preferred Specimen Type: Plasma
Container/Tube: Lithium heparin gel
Outreach Preferred Specimen Type: Serum
Container/Tube: Serum gel
Spin Instructions:
Serum gel: Allow to sit for 30 minutes prior to spinning. Spin within 2 hours of collection.
Heparin plasma: Spin within 45 minutes of collection.
Specimen Transport Temperature
Ambient
Storage Temp Stability:
Room Temperature: 3 days
Refrigerated Temperature: 7 days
Methodology
Immunoassay
Reference Range
New reference range effective 6/22/2021
213 - 816 pg/mL
Day(s) Test Set Up/TAT
Performed:
Daily
Available STAT
TAT:
STAT: < 1 hr
Routine: < 4 hrs
Aliases
B12 Level
CPT Code
82607