Test Catalog

Test ID: VEDOZ    
Vedolizumab Quantitation with Antibodies, Serum

Useful For Suggests clinical disorders or settings where the test may be helpful

Assessing the unexpected loss of response to therapy with vedolizumab over time


An aid to achieving desired serum levels of vedolizumab

Profile Information A profile is a group of laboratory tests that are ordered and performed together under a single Mayo Test ID. Profile information lists the test performed, inclusive of the test fee, when a profile is ordered and includes reporting names and individual availability.

Test IDReporting NameAvailable SeparatelyAlways Performed
VEDOLVedolizumab QN, SYesYes
VEMABVedolizumab Ab, SNoYes

Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

When this test is ordered, vedolizumab quantitation and testing for antibodies to vedolizumab will always be performed.


This test includes both quantitation and antibody testing on all specimens. The therapeutic thresholds for vedolizumab and optimal concentrations associated with good outcomes are not well established. The American Gastroenterology Association (AGA) does not have a formal guideline on optimal thresholds for vedolizumab at this time.


If there is a known justification for performing both quantitation and antibody levels, this is the correct test to order. If there is not a known reason to perform the antibodies component, order VEDOL / Vedolizumab Quantitation with Reflex to Antibodies, Serum. VEDOL begins with quantitation and when quantitation results are 15.0 mcg/mL or less, testing for antibodies to vedolizumab will be performed.

Method Name A short description of the method used to perform the test

VEDOL: Liquid Chromatography-Mass Spectrometry (LC-MS/MS)

VEMAB: Electrochemiluminescent Bridging Immunoassay

NY State Available Indicates the status of NY State approval and if the test is orderable for NY State clients.


Reporting Name Lists a shorter or abbreviated version of the Published Name for a test

Vedolizumab QN with Antibodies, S

Aliases Lists additional common names for a test, as an aid in searching