Days Set Up
Varies; test performed once per week
Analytic Time

1 - 10 days

Soft Order Code

Test Updated:


Henoch-Schonlein purpura
Fibronectin Aggregates
IgA Nephropathy Evaluation

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Test Overview

Test Methodology


Test Usage

Aggregates consisting of IgA complexed with fibronectin are found in sera of most patients with IgA nephropathy and patients with Henoch-Schonlein purpura. Detection of these aggregates is based on their specific attachment to a fragment of type 1 collagen.

Reference Range

< 3.0 EIA Units

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

Specimen Requirements

Collection Offsite

Collect specimen in a red top or SST tube. Centrifuge, aliquot into a plastic vial and refrigerate.

Yellow Top Tube
Normal Volume
1 ml serum
Minimum Volume
0.5 ml serum

Billing Information

CPT Code
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.