Days Set Up
Varies; test performed twice per week
Analytic Time

2 days

MiChart Code
Misc Quest Diagnostics-Nichols (Sendout)
Soft Order Code
ZW131

Test Updated:

Synonyms

Transcobalamin Vit B12 Carrier Protein
Transcobalamin Vit B12 Carrier Protein
UBBC
B12 Combining Capacity
B12 Combining Capacity

Looking to order a test?

We’ve provided helpful links to make ordering easy.

Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Test Overview

Test Methodology

Radiobinding Assay

Test Usage

Evaluation of conditions affecting vitamin B12 by altering the normal amounts of vitamin B12 binding protein, e.g., pregnancy.

Reference Range

650 - 1340 pg/mL

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Onsite

Collect blood in a red top tube from a fasting patient.

Collection Offsite

Collect blood in a red top tube from a fasting patient. Centrifuge, aliquot serum into plastic vial and freeze. Recently administered radioisotopes will interfere with this assay.

Red Top Tube
Normal Volume
1 ml serum
Minimum Volume
0.2 ml serum

Billing Information

CPT Code
82608
Pro Fee Code
 
LOINC
2171-7

Have More Questions?

Explore our helpful billing resources:

Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.