C-Peptide, 60 Minutes

Also known as: C PEP 60

Clinical Use

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

Not provided.

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.

Test Details

New York Approved

Methodology

Immunoassay (CLIA)

Biomarkers

C-Peptide

Protein

C-Peptide Level

Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)

LOINC Codes

Order Codes

13039-3 - C peptide 1h p chal SerPl-mCnc

Result Turnaround Time

1 day

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.