Days Set Up
Tuesday, Friday
Analytic Time

3 - 7 days

MiChart Code
Soft Order Code

Test Updated:


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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Test Overview

Test Methodology

Enzyme-Linked Immunosorbent Assay (ELISA)

Test Usage

Therapeutic drug monitoring.

Reference Range

USTEKINUMAB QN, S: Limit of quantitation is 0.3 mcg/mL
In inflammatory bowel disease, at post-induction measurement (week 8), concentrations above 3.5 mcg/mL are associated with good outcomes
For maintenance stages:
Concentrations > or =1.0 mcg/mL are associated with clinical response and clinical remission
Concentrations > or =4.5 mcg/mL are associated with mucosal healing

USTEKINUMAB AB, S: Limit of quantitation is 10 AU/mL
Absent: <10 AU/mL
Present: > or =10 AU/mL

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements


Collect trough specimen in Red or SST tube. Spin and aliquot serum into a screw capped plastic tube. Send to Specimen Processing refrigerated

Yellow Top Tube
Normal Volume
0.5 mL serum
Minimum Volume
0.4 mL serum

Billing Information

CPT Code
80299, 83520
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.