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IGF-2 [92790]
MessageFor Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.
Test Code
IGF2
Alias/See Also
92790
CPT Codes
82542
Preferred Specimen
0.5 mL serum collected in a red-top tube (no gel)
Patient Preparation
Overnight fasting is preferred.
Minimum Volume
0.3 mL
Instructions
Allow blood to clot (10-15 minutes) at room temperature. Separate serum from cells and refrigerate. If sample collected in glass collection tube, transfer to plastic container.
Transport Container
Plastic screw-cap vial
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen -20° C: 21 days
Frozen -70° C: 34 days
Refrigerated: 7 days
Frozen -20° C: 21 days
Frozen -70° C: 34 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Grossly lipemic • Hemolysis • Plasma
Methodology
Chromatography/Mass Spectrometry
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: Mon, Thurs; Report available: 4-7 days
Reference Range
| <2 Years | Not established |
| 2-17 Years | 260-630 ng/mL |
| ≥18 Years | 267-616 ng/mL |
Clinical Significance
IGF-2 measurements are useful in the diagnosis of growth disorders, as an adjunct to IGF-1.
Performing Laboratory
| Quest Diagnostics Nichols Institute-San Juan Capistrano, CA |
| 33608 Ortega Highway |
| San Juan Capistrano, CA 92675-2042 |
Last Updated: November 30, 2021
