Prometheus Anser VDZ




Test Mnemonic

ANSVDZ

CPT Codes

  • 80280 - QTY (1)
  • 82542 - QTY (1)

Includes

  • Serum vedolizumab (VDZ) concentration
  • Antibodies to vedolizumab (ATV) concentration

Performing Laboratory

Prometheus

FDA Category

Laboratory Developed Test


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
2 mLSerumSST (Gold) RefrigeratedShip using cold pack

Alternate Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
2 mLSerumNo additive (Red) RefrigeratedShip using cold pack

Minimum Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
2 mL    Adult patients
0.5 mL    Pediatric patients

Stability

Environmental Condition Description
Ambient7 days
Refrigerated9 days
FrozenUnacceptable

Days Performed

Varies

Turnaround Time

4 - 5 days

Methodology

Name Description
High Performance Liquid Chromatography (HPLC) 

Clinical Info

Serum concentrations of vedolizumab (VDZ) may vary among equally dosed patients, which can ultimately affect patient outcomes. Some patients may develop immunogenicity to VDZ by producing antibodies to vedolizumab (ATV), and the presence of persistent anti-vedolizumab antibody has been observed to substantially reduce serum concentrations of vedolizumab. The quantitative measurement of VDZ and ATV levels in serum provides clinicians with valuable information to help them gain a better understanding of the factors that may be affecting a patient’s loss of response. The Prometheus Anser VDZ test is a next generation and more sensitive quantitative monitoring assay that allows healthcare providers to measure and monitor serum VDZ and ATV levels at any time during therapy. Incorporating therapeutic drug monitoring may clarify what factors are contributing to a patient’s loss of response and help guide treatment decisions by providing information to help determine an appropriate course of action.