Days Set Up
Monday - Friday
Analytic Time

1 - 3 days

MiChart Code
Growth Factor Panel
Soft Order Code

Test Updated:


Insulin-Like Growth Factor Growth Assessment Group
Growth Assessment Group V
IGF-1 and IGFBP-3
Growth Assessment Group V
Growth Factor Panel
IGF-I Blocking
IGF Binding Protein (IGFBP-3)
IGF-1 and IGFBP-3 Growth Panel
IGF Binding Protein-3, Serum

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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

IGFBP-3: Enzyme-Labeled Chemiluminescent Immunometric Assay, IGF-1: Liquid Chromatography-Mass Spectrometry (LC-MS).

Test Usage

In combination with IGF-1 measurements, IGFBP-3 measurements are useful for the diagnosis of growth disorders, the diagnosis of adult GH-deficiency, monitoring of rhGH treatment, and as a possible adjunct to IGF-1 and GH in the diagnosis and follow-up of acromegaly and gigantism. At this time, IGFBP-3 cannot be reliably used as a prognostic marker in breast, colon, prostate or lung cancer.

Reference Range

Age specific ranges provided with report.

* 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 serum into two equal portions, and freeze.

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

Billing Information

CPT Code
84305 IGF-1, 83520 IGFBP3
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.