Lab results are too important to go anywhere else

Beaumont Laboratory

Insulin Like Growth Factor Binding Protein 1

IGF Binding Protein 1, IGFBP1, LabCorp #140822, Esoterix #500283, EPIC: LAB6288, SOFT: XIGB1


A number of drugs are known to influence endocrine function directly, or to interfere with assay methodology. Whenever possible, physicians should consider discontinuing all drugs, except those necessary to the patient's well-being, several days prior to sample collection. Always note any drugs being administered on the Test Request Form.

Specimen Collection Criteria

Collect (preferred specimen): One plain Red-top tube.
Also acceptable: One Gold-top SST tube.

Physician Office/Drawsite Specimen Preparation

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to a plastic transport tube and freeze (-20°C/-4°F or below).

Preparation for Courier Transport

Transport: 0.5 mL serum, frozen (-20°C/-4°F or below). (Min: 0.5 mL)

Rejection Criteria

  • Specimens not collected and processed as indicated.


Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 24 hours
Refrigerated (2-8°C or 36-46°F): 48 hours
Frozen (-20°C/-4°F or below): 16 months

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Sendout Laboratory with any questions.


Sent to LabCorp Esoterix Endocrinology, Calabassas Hills, CA.


Monday, Thursday.
Results available in 3-7 days.

Reference Range

By Report.

Test Methodology

Immunochemiluminometric Assay (ICMA).

CPT Code


Test Codes

LabCorp #140822, Esoterix #500283, EPIC: LAB6288, SOFT: XIGB1

Last Updated


Microtainer® and Vacutainer® are registered trademarks of Becton, Dickinson and Company.
UroVysion® is a registered trademark of Abbott Laboratories. ThinPrep® is a registered trademark of Hologic, Incorporated.

This directory currently reflects information only for specimens collected and/or processed at the Farmington Hills, Grosse Pointe, Royal Oak, and Troy campuses.