C-Peptide, 180 Minutes
Also known as: C PEP 180
Use
The C-Peptide, 180 Minutes test is utilized to evaluate pancreatitis and to assist in the differentiation of pancreatic insulinomas from non-pancreatic causes of hypoglycemia. It aids in the assessment of beta cell function and helps in the management of individuals with diabetes to observe insulin production. This test can be particularly useful in determining residual beta cell function in patients with diabetes being treated with insulin.
Special Instructions
Fasting specimen preferred for optimal results. Allow specimen to clot completely at room temperature and separate serum from cells as soon as possible, ideally within 2 hours of collection.
Limitations
The C-Peptide, 180 Minutes test has certain limitations. Reference ranges have not been established for this test, and the interpretation of results should be considered in the context of the patient's clinical presentation and other laboratory findings. Grossly hemolyzed specimens may be rejected and cannot be processed, impacting test results. Stability of the specimen may also affect test accuracy: specimens must be separated from cells within 2 hours of collection, and stability varies with storage conditions.
FDA ApprovedNew York Approved
Methodology
Immunoassay (CLIA)
Biomarkers
LOINC Codes
- 13043-5
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
Not provided
Minimum Volume
1 mL
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. Transport 1 mL serum to an ARUP Standard Transport Tube.
Patient Preparation
Fasting specimen preferred.
Storage Instructions
Frozen.
Causes for Rejection
Grossly hemolyzed specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 8 hours |
| Refrigerated | 7 days |
| Frozen | 1 month |