Analytic Time

2 - 4 days

MiChart Code
Miscellaneous Sendout reflexing to C1QA1 or C1QA2
Soft Order Code
SO reflexing to C1QA1 or C1QA2

Test Updated:


HLA Antibody Specificity Class II
HLA Antibody Specificity Class I
C1q Binding HLA Antibody

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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

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Test Overview

Test Methodology

Luminex Bead Test

Test Usage

This test enables characterization of potentially high titer or complement activating antibodies. The specificities of C1q binding antibodies are reported.

Reference Range

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

Specimen Requirements


Collect specimen in a red top tube. Send intact specimen at room temperature. Please complete a UCLA Immunogenetics Center Requisition… and submit with the specimen.

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

Billing Information

CPT Code
86832, 86833
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.