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

15 days

MiChart Code
HLA Antibody Screen, PRA
Soft Order Code

Test Updated:


HLA Antibody Screening Class I
HLA Antibody Screening Class II
PRA Monthly testing
HLA Antibody Screen
HLA Antibody Screening

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

Solid Phase Assay

Test Usage

Each recipient is screened to detect preformed anti-HLA antibodies. Patients may develop these antibodies in cases of previous sensitization events like transfusions, pregnancies, or previous transplant. When these antibodies are detected the Panel Reactive Antibody (PRA%) value is assigned and the anti-HLA antibody specificity is defined by Solid Phase Single Antigen assays. PRA% values are updated with a new sample every 3 months. For patients listed for transplant with a deceased donor the Histocompatibility Laboratory will updated PRA% every 3 months.

Reference Range

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

Specimen Requirements

Yellow Top Tube
Red Top Tube
Normal Volume
5 mL serum
Minimum Volume
3 mL serum

Billing Information

CPT Code
86829 x2
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.