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HelpTest Code LAB67 Vitamin B12
Specimen Requirements
Container/Tube:
Preferred: Lithium Heparin (Green Top)
Acceptable: Serum (Red Top)
Specimen Volume: 1mL
Stability:
| Temperature | Time |
| Room Temp 18-28°C | 2 hours |
| Refrigerated 2–8°C | 7 days |
| Frozen <-18°C | 4 weeks |
Department
Chemistry