C-Peptide Stimulation by Glucagon
Use
C‑Peptide Stimulation by Glucagon is useful in assessing patients for pancreatic beta cell function and reserve. Patients with Type I diabetes mellitus have decreasing reserves of beta cell function.
Special Instructions
Includes baseline, 5 minutes, 10 minutes, 15 minutes specimens. Glucagon is not supplied by Quest Diagnostics.
Limitations
Not provided.
Methodology
Immunoassay (ECLIA)
Biomarkers
Result Turnaround Time
Not provided.
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
2 mL each timed specimen
Minimum Volume
0.4 mL each timed specimen
Container
Transport tube (x4)
Collection Instructions
Draw baseline fasting specimen. Administer 1 mg Glucagon by I.V. Draw additional samples at 5, 10 and 15 minutes. All tubes must be clearly marked with time drawn. Submit all tubes with one test requisition.
Patient Preparation
Overnight fasting is required
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 24 hours |
| Refrigerated | 7 days |
| Frozen | 12 months at −70 °C (28 days at −20 °C) |
Other tests from different labs that may be relevant