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Test Code VEDOLIZ Vedolizumab and Anti-Vedolizumab Antibody

Important Note

This is currently not a New York State Approved test


  Please submit a pre authorization form from NYSDOH or testing cannot be send to Reference Laboratory



Performing Laboratory

Esoterix Endocrinology

Calabasas Hills, CA


Electrochemiluminescence Immunoassay (ECLIA)

Reference Values



Quantitation Limit: <1.5 ug/mL

Results of 1.5 or higher indicate detection of Vedolizumab.


Anti-Vedolizumab Ab:


Quantitation Limit: <25 ng/mL.

Results of 25 or higher indicate detection of antivedolizumab




Physician Office Specimen Requirements

Container/Tube: Gold top, Red top or Lavender top tube

Specimen: 3 mL serum or EDTA plasma (1 mL min)

Transport Temperature: Frozen serum or plasma


Note: Allow a minimum clotting time of 30 to 60 minutes with serum separation within 2 hours of collection.

CPT Code Information



Computer Interface Code

PDM #  1759547

Used For

Provides serum concentrations of vedolizumab and anti-vedolizumab antibodies in order to optimize treatment and facilitate clinical decision-making.


In the absence of anti-vedolizumab antibodies, the vedolizumab drug level reflects the total vedolizumab concentration. In the presence of anti-vedolizumab antibodies, the vedolizumab concentration reflects the antibody-unbound fraction of vedolizumab.

The presence of vedolizumab drug, even at concentrations well above target treatment levels , does not interfere with anti-vedolizumab antibody measurement. All positive anti-vedolizumab antibody results are verified by a confirmatory test.