Vitamin B12 is decreased in pernicious anemia, total or partial gastrectomy, malabsorption and certain congenital and biochemical disorders.
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- Fasting Required: NO
- Preferred Specimen: Serum
- Patient Preparation: Overnight fasting is required
- Reference Range(s):
≤4 Years Not established 5-9 Years 250-1205 pg/mL 10-17 Years 260-935 pg/mL >17 Years 200-1100 pg/mL
- Turnaround Time: 3 Days
- Test Code: 927