Test Overview
LC-MS/MS
Electrochemiluminescent Bridging Immunoassay
Assessing the unexpected loss of response to therapy with vedolizumab over time.
An aid to achieving desired serum levels of vedolizumab.
Vedolizumab lower limit of quantitation=1.0 mcg/mL Antibodies-To-Vedolizumab: <9.8 ng/mL; Absence of antibodies to vedolizumab is defined as <9.8 ng/mL; Presence of ATV is reported as positive when concentrations are > or = 9.8 ng/mL
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
Vedolizumab Antibodies: Tuesday, Friday
6 - 10 days
- Entyvio
Specimen Requirements
Collect specimen in a Red top or SST tube. Centrifuge and send serum aliquotted into a screw capped tube, refrigerated. Include dose and interval.
1.5 mL serum
0.75 mL serum
Additional Information
Test sent to Mayo Clinic Laboratories.