Casandra
Casandra Test Code PR71710Version 1 (DRAFT)
Performing Lab
Lab Prometheus LaboratoriesLab Test ID #3190
Anser UST
Clinical Use
Order TestUse
Anser UST is used for monitoring therapeutic levels of ustekinumab (UST) and antibodies-to-ustekinumab (ATU). This test aids in evaluating drug efficacy and managing dosage to ensure patient safety and optimal therapeutic outcomes.
Special Instructions
The test employs homogeneous mobility shift assay (HMSA) techniques for precise measurement of drug and antibody levels without drug interference.
Limitations
As a laboratory-developed test, Anser UST has not been cleared by the FDA. Its validation follows CLIA guidelines but is limited by the absence of WHO standards for UST.
Test Details
Methodology
Immunoassay (HMSA)
Biomarkers
Result Turnaround Time
3 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Serum
Volume
2.0 mL
Minimum Volume
0.5 mL for Peds
Container
Serum Separator Tube or Red-Top Tube
Storage Instructions
Transport ambient or with a cold pack. Do not freeze.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 14 days |
| Refrigerated | 14 days |