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Test Name:
IGF Binding Protein-2


  • TMF No:
    43626
  • Performance Lab Name:
    Quest Diagnostics Nichols Institute, SJC
  • Test Mnemonic:
    IGFBP2
  • CPT Code:
    83519
  • Ref Lab Test No:
    127233P
  • Also Known As:
    IGFBP-2; Insulin-Like Growth Factor Binding Protein-2
  • Spec Type:
    Serum
  • Spec Container:
    Red top (serum) or Gold top (SST) tube
  • Pref Vol:
    1 mL
  • Min Vol:
    0.2 mL
  • Patient Prep:
    Fasting is preferred
  • Spec Collect:
    Normal phlebotomy procedure. Mix by inverting tube 5 times.
  • Spec Process:
    Allow specimen to clot completely at room temperature. Centrifuge to separate from cells and transfer serum to a screw-capped plastic transport tube.
  • Spec Store Transport:
    Frozen.
  • Spec Stability:
    After separation from cells:
    Room temperature: 12 hours
    Refrigerated: 4 days
    Frozen: 4 weeks
  • Spec Reject:
    Grossly hemolyzed or lipemic specimens.
  • Methodology:
    Radioimmunoassay (RIA)
  • Clinical Significance:
    The concentration of IGFBP-2 is inversely correlated with changes in growth hormone (GH) secretion. IGFBP-2 may also be used as a marker of metastatic prostatic carcinoma.
  • Interpretive Data:
    This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
  • Day Run:
    Tue
  • Time Reported:
    5-11 days
  • Test Type:
    HORMONE