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HelpTest Code B12R Vitamin B12 w/ Reflex to Methylmalonic Acid, Serum
Performing Laboratory
Lima Memorial Health System Laboratory
Specimen Requirements
Preferred:
Container/Tube: Plain, Red Top tube
Minimum Volume: 1.0 mL
Also Acceptable:
Container/Tube:Serum gel (SST-Gel) tube
Reference Values
180-914 pg/mL
If result is >400 pg/ml Methylmalonic Acid will reflex.
Specimen Stability
Ambient: 8 hours
Refrigerate: 48 hours
Frozen: aliquot for longer storage
Day(s) Test Set Up
Monday through Sunday
Methodology
B12 - Chemiluminescent Immunoassay
Test Classification and CPT Coding
82607 - B12
83921 - Methylmalonic Acid