| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
USTEKINUMAB LEVEL W/ABS
Test CodeLAB3923
Quest Code
39986
CPT Codes
80299, 83520
Preferred Specimen
0.5 mL serum
Patient Preparation
Collect immediately before next scheduled dose (trough specimen)
Minimum Volume
0.35 mL
Instructions
Collect immediately before next scheduled dose (trough specimen)
Transport Container
Transport tube
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: Unacceptable
Refrigerated: 21 days
Frozen: 21 days
Refrigerated: 21 days
Frozen: 21 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Grossly lipemic • Heat-inactivated specimen
Methodology
Enzyme Linked Immunosorbent Assay (ELISA)
FDA Status
This test was developed and its performance characteristics have been determined by Mayo Clinic Laboratories. It has not been cleared or approved by the FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Tues, Fri
Clinical Significance
Evaluation of loss of response to therapy.
Quantification of ustekinumab in human serum.
Trough level quantitation for evaluation of patients treated with ustekinumab.
Detection of antibodies to ustekinumab in human serum.
Quantification of ustekinumab in human serum.
Trough level quantitation for evaluation of patients treated with ustekinumab.
Detection of antibodies to ustekinumab in human serum.
Performing Laboratory
| Mayo Clinical Laboratories |
| 3050 Superior Drive NW |
| Rochester, MN 55901 |
Last Updated: February 8, 2022
