C-Peptide, 120 Minutes
Also known as: C PEP 120
Use
C-Peptide levels are used to evaluate insulin production and are often used in the diagnosis and management of various conditions such as diabetes, insulinomas, and other pancreatic neuroendocrine tumors (PNETs). This specific test, measuring the C-Peptide level at 120 minutes, aids in assessing the beta-cell function of the pancreas and helps evaluate the body's insulin secretion capabilities.
Special Instructions
A fasting specimen is preferred. It is crucial to allow the specimen to clot completely at room temperature before separating it from cells as soon as possible or within two hours of collection.
Limitations
Reference ranges for the C-Peptide, 120 Minutes test have not been established. Results should be interpreted in the clinical context of the individual patient. External factors such as patient preparation, specimen handling, and analytical interferences may affect the accuracy and interpretation of result. Specifically, grossly hemolyzed specimens are unacceptable for analysis and could lead to inaccurate results.
FDA ApprovedNew York Approved
Methodology
Immunoassay (Quantitative Chemiluminescent Immunoassay)
Biomarkers
LOINC Codes
- 13041-9
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1 mL
Minimum Volume
Not provided
Container
Serum Separator Tube (SST)
Collection Instructions
Allow specimen to clot completely at room temperature. Separate from cells ASAP or within 2 hours of collection.
Patient Preparation
Fasting specimen preferred.
Storage Instructions
Transport to testing facility frozen.
Causes for Rejection
Grossly hemolyzed specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 8 hours |
| Refrigerated | 7 days |
| Frozen | 1 month |