Analytic Time
MiChart Code
Thiopurine Monitoring Test
Soft Order Code

Test Updated:



Looking to order a test?

We’ve provided helpful links to make ordering easy.

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

Calculated values based on CBC, Automated Differential Count, and Comprehensive Metabolic Panel test results.

Test Usage

This test is used for monitoring thiopurine dosage, adherence, shunting, and effectivenes and has been established for use in pediatric and adult patients with inflammatory bowel disease. It provides percent probabilities for clinical response, nonadherence, and shunting to 6-MMP in IBD patients on thiopurine medications.

Reference Range

Percent probabilities for clinical response, nonadherence, and shunting are reported.

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

Specimen Requirements

Collection Onsite

Collect CBCD and COMP specimens.

Collection Offsite

This test is available only to University of Michigan registered patients.

Minimum Volume

Billing Information

CPT Code
Pro Fee Code

Have More Questions?

Explore our helpful billing resources:

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.