IGF‑2
Also known as: IGF II, Insulin Like Growth Factor 2, Somatomedin A
Use
IGF‑2 measurements are useful in the diagnosis of growth disorders, as an adjunct to IGF‑1. This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics (Nichols Institute) but has not been cleared or approved by the U.S. Food and Drug Administration, though it is validated under CLIA regulations for clinical use. ([jdos.nicholsinstitute.com](https://jdos.nicholsinstitute.com/dos/questdemo/test/396311?utm_source=openai))
Special Instructions
Not provided.
Limitations
Not provided.
Methodology
Mass Spectrometry
Biomarkers
Result Turnaround Time
5-8 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.5 mL
Minimum Volume
0.3 mL
Container
red‑top tube (no gel)
Collection Instructions
Allow blood to clot (10‑15 minutes) at room temperature. Separate serum from cells and refrigerate. If collected in glass tube, transfer to plastic container.
Patient Preparation
Overnight fasting is preferred.
Causes for Rejection
Grossly lipemic • Hemolysis • Plasma
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 7 days |
| Refrigerated | 7 days |
| Frozen | 21 days (‑20°C); 34 days (‑70°C) |