Vitamin B12 Binding Capacity
Abbrev Code: | VB12BC | ||
Order Code: | LAB6068 | Order Name: | Vitamin B12 Binding Capacity |
Synonyms: | B12 Binding Capacity | ||
Methodology: | Radioimmunoassay | ||
CPT Codes: | 82608 x1 | ||
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. |
Stability: | After separation from cells: 6 hours at room temperature; 1 week refrigerated; 1 month frozen. |
Test Performed at or Referral Lab | Lab Sendouts (ARUP) |
Referral Lab number: | 70260 |
Interpretive
Reference Range: | 800-2600 pg/mL |
Use: | This assay measures the unsaturated binding capacity of serum for vitamin B12. |
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