C-Peptide, 60 Minutes
Also known as: C PEP 60
Use
The C-Peptide test is primarily used in assessing pancreatic function and insulin production by measuring the level of C-Peptide in the blood after insulin has been secreted. This test can help diagnose the cause of hypoglycemia, determine insulinomas or differentiate between insulin-dependent and insulin-independent hypoglycaemia. C-Peptide measurement is also important in evaluating residual beta cell function in diabetic individuals to guide treatment and management.
Special Instructions
Fasting specimen is preferred for this test to ensure the accuracy of the results.
Limitations
This test has not established reference ranges and requires conversion to nmol/L for certain analyses (multiply ng/mL by 0.33). The analysis is affected by factors such as hemolysis, time from collection to separation, and storage conditions, which can impact the accuracy and reliability of the C-Peptide measurements. Discrepancies can occur if proper collection and handling protocols are not followed.
New York Approved
Methodology
Immunoassay (CLIA)
Biomarkers
LOINC Codes
- 13039-3
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1 mL
Minimum Volume
0.5 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.
Causes for Rejection
Grossly hemolyzed specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 8 hours |
| Refrigerated | 7 days |
| Frozen | 1 month |