Days Set Up
Monday - Friday, 8:00am - 4:30pm
Analytic Time

3 - 5 days

Test Updated:


Estrogen IHC
Progesterone IHC
Immunohistochemistry (IHC)
Tumor Markers
Lymphoid Markers
Estrogen Receptor Protein, Paraffin Sections
Progesterone Receptor Protein, Paraffin Sections

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

Direct and indirect peroxidase and avidin-biotin complex peroxidase methods.

Test Usage

To detect the presence of specific antigens in tissues or in cytology specimens.

Reference Range

Interpretative report provided.

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

Specimen Requirements

Collection Offsite

If requesting IHC stains as part of a consultation, please submit the request using the MLabs Anatomic Pathology Consultation requisition: check the box Pathology Consultation and the box Special Stain(s) Requested and indicate the specific stain(s) that are needed. Contact the MLabs Client Services Center at 800-862-7284 for any special instructions.

Minimum Volume

Billing Information

CPT Code
88342-TC 1st Ab, 88341-TC ea addl Ab
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.