IGF Binding Protein‑1 (IGFBP‑1)
Also known as: Insulin-Like Growth Factor Binding Protein
Use
The concentration of IGFBP‑1 correlates with glycemic status. It may be used for monitoring insulin responsiveness, as a marker for insulin‑producing tumors, for monitoring acute fluctuations in insulin action, and in assessing whether poor glycemic control is due to inadequate insulin treatment or dietary intake issues.
Special Instructions
Overnight fasting is preferred prior to collection. Send out Monday through Friday with the Quest courier.
Limitations
Not provided.
Methodology
Immunoassay (RIA)
Biomarkers
Result Turnaround Time
5-11 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1 mL serum
Minimum Volume
0.2 mL serum
Container
Red or Gold SST or Gold Microtainer tube
Collection Instructions
Overnight fasting is preferred.
Patient Preparation
Fasting overnight.
Storage Instructions
Separate from cells within two hours, freeze at ‑20 °C.
Causes for Rejection
Gross hemolysis or lipemia; received at room temperature.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 24 h |
| Refrigerated | 7 d |
| Frozen | 28 d |
Other tests from different labs that may be relevant