IGF Binding Protein-1
| Sunquest Code: | IGF1BP | ||
| Epic Code: | LAB3564 | Epic Name: | IGF Binding Protein 1 |
| Synonyms: | IGFBP-1; IGF Binding Protein 1 | ||
| Methodology: | Radioimmunoassay | ||
| CPT Code: | 83519 | ||
| Turnaround Time: | Specimens are sent to reference laboratory Mon-Fri; results are reported within 4-8 days. | ||
| Special Instructions: | Overnight fasting is required. | ||
| Compliance: | This test was developed and its performance characteristics determined by Quest Diagnostics Nichols Institute, San Juan Capistrano. Performance characteristics refer to the analytical performance of this test. |
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Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 2.0 mL |
| Minimum\Peds Volume: | 0.6 mL |
| Container: | Red (no gel) (Purple (EDTA), Red or gold (gel)) |
| Collection Instructions: | Overnight fasting is preferred. |
| Causes for Rejection: | Hemolyzed or lipemic specimens. |
Processing and Shipping
| Specimen Processing: | Centrifuge and aliquot 1 mL, 0.2 mL minimum. Freeze. |
| Shipping Instructions: | Ship on dry ice. |
| Test Performed at or Referral Lab | Lab Sendouts (Quest) |
| Referral Lab number: | 36590 |
Interpretive
| Reference Range: |
References ranges have not been established by the reference laboratory for patients under 5 years of age.
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| Use: | The concentration of IGFBP-1 is correlated with glycemic conditions. IGFBP-1 may be used for monitoring insulin responsiveness, as a marker for insulin-producing tumors, monitoring acute fluctuations in insulin action, and determining if poor glycemic control is due to inadequate insulin treatment or poor control of dietary intake. |
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