Casandra
Casandra Test Code QD64815Version 1 (DRAFT)
Performing Lab
Proinsulin
Also known as: Insulin Precursor, Precursor to Insulin
Clinical Use
Order TestUse
Proinsulin measurement is used to diagnose insulinoma and to monitor therapy in patients with insulinomas, reflecting excessive hormone production from insulin-secreting tumors.
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
Methodology
Immunoassay (ELISA)
Biomarkers
Proinsulin
AnalyteProinsulin • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Result Turnaround Time
5-8 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Serum
Volume
1 mL
Minimum Volume
0.5 mL
Container
plain red-top tube
Collection Instructions
Drawn following an overnight (8‑10 hour) fast; centrifuge red‑top 30 minutes after draw; send specimen frozen
Patient Preparation
Overnight (8‑10 hour) fast
Storage Instructions
Send specimen frozen