Vitamin B12 Binding Capacity
| Sunquest Code: | VB12BC | ||
| Epic Code: | LAB6068 | Epic Name: | Vitamin B12 Binding Capacity |
| Synonyms: | B12 Binding Capacity | ||
| Methodology: | Radioimmunoassay | ||
| Turnaround Time: | Specimens are sent to reference laboratory Mon-Sat; results are reported in 1-5 days. | ||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 2 mL |
| Minimum\Peds Volume: | 0.4 mL |
| Container: | Red or gold (gel) [Alternate Containers: Red (no gel)] |
| Patient Preparation: | Patient should be fasting for 12-15 hours prior to collection. Vitamin B12 supplements should not be administered within 72 hours of drawing blood for this test. |
| Causes for Rejection: | Plasma |
Processing and Shipping
| Specimen Processing: | Centrifuge ASAP and aliquot 1 mL, 0.1 mL minimum. Each vitamin level requested requires a separate aliquot tube. Store in refrigerator. |
| Shipping Instructions: | Ship at refrigerated temperature. |
| Test Performed at or Referral Lab | Lab Sendouts (ARUP) |
| Referral Lab number: | 70260 (B12B) |
Interpretive
| Reference Range: | 800-2600 pg/mL |
| Use: | This assay measures the unsaturated binding capacity of serum for vitamin B12. |
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