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Beaumont Laboratory

Insulin Like Growth Factor Binding Protein 2

IGF Binding Protein 2, IGFBP2, LabCorp #500133, Esoterix #500284, EPIC: LAB6289, SOFT: XIGB2


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 or Lavender-top EDTA tube.

Physician Office/Drawsite Specimen Preparation

Centrifuge to separate serum or plasma from cells within one hour of collection. Transfer serum or plasma to a plastic transport tube and freeze (-20°C/-4°F or below).

Preparation for Courier Transport

Transport: 1.0 mL serum, frozen (-20°C/-4°F or below). (Min: 0.3 mL)

Rejection Criteria

  • Specimens collected in Green-top Heparin tubes.
  • 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): 3 days
Frozen (-20°C/-4°F or below): 8 days

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.


Every other Tuesday.
Results available in 4-18 days.

Reference Range

By report.

Test Methodology

Electrochemiluminescent (ECL).

CPT Code


Test Codes

LabCorp #500133, Esoterix #500284, EPIC: LAB6289, SOFT: XIGB2

Last Updated


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