C-Peptide, Two Specimens
Use
The C-Peptide, Two Specimens test is used to assess the c-peptide levels in the blood which might help evaluate the insulin production in patients. It involves drawing two separate specimens that measure the baseline c-peptide level and the level after administering a drug or treatment, thereby helping in the diagnosis and management of conditions like diabetes and insulinomas.
Special Instructions
This is a series panel that requires drawing multiple tubes at different time points. It is essential that there is an initial tube (baseline) followed by a treatment like a pill, shot, or glucola before collecting additional samples. Avoid using this panel if the patient is not receiving such treatment. Patients on high biotin supplements should stop taking it 72 hours prior to the test.
Limitations
The test may show interference when samples are taken from patients consuming high doses of biotin (Vitamin B7/B8). It is vital to inquire about biotin use before testing to avoid inaccurate results. Misuse of the panel by administering it without appropriate drug or treatment regimens can lead to erroneous interpretations.
Methodology
Immunoassay (CLIA)
Biomarkers
LOINC Codes
- 13032-8
- 46963-5
- 57376-6
- 57376-6
- 46963-5
- 13032-8
Result Turnaround Time
1-2 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
Not provided
Minimum Volume
Not provided
Collection Instructions
Collect an initial baseline tube followed by tubes after treatment with medication or other specified procedures.
Patient Preparation
Patients should cease biotin intake at least 72 hours before the sample collection.
Other tests from different labs that may be relevant