Home
HelpTest Code LAB973 B-12 Binding Capacity
Additional Codes
VIT B12 BC
Clinical System Name
B-12 Binding Capacity
Synonyms
B12, B12B; Transcobalamin
Sample Requirements
Specimen: Blood
Container(s): Red Top-Plain
Preferred Vol: 2.0 mL
Minimum Vol: 1.0 mL
Note: Patient should fast for 12-15 hours prior to collection. Vitamin B12 supplements should not be administered within 72 hours of drawing blood for this test.
Processing Instructions
Reject due to: Plasma.
Spin: Y
Aliquot: Y
Temp: 2 - 4 C
Storage Location: CPA refrigerator, Send Outs rack.
Off-site collection: Transfer 1.0 mL serum to a plastic aliquot tube (Min: 0.1 mL). Transport refrigerated to Seattle Children's Main Lab.
Stability
| Specimen Type | Temperature | Time |
| Serum | Room Temp | 6 h |
| Refrigerated | 1 w | |
| Frozen | 1 m |
Availability
| STAT | Performed | TAT |
| N | M, Th | 3 - 7 d |
Performing Laboratory
ARUP Laboratories
500 Chipeta Way
Salt Lake City, UT 84108-1221
Phone Number: (800) 522-2787
Department
Department: Send Outs
Phone Number: (206) 987-2563
CPT Codes
82608
Methodology
Method: Quantitative Radioimmunoassay
Analytical Volume: 0.1 mL Serum
Limitations:
Send Out Instructions
| Reference Test Name | Vitamin B12 Binding Capacity |
| Reference Lab Test Code | 0070260 |
| Instructions | Send out Monday through Friday with the ARUP courier. |
Reference Ranges
800-2600 pg/mL