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
Related Tests
Other tests from different labs that may be relevant
Proinsulin
Labcorp
Proinsulin, Intact
ARUP Laboratories
Proinsulin, Intact/Insulin Ratio
ARUP Laboratories
Insulin
Labcorp
Insulin, Serum
Mayo Clinic Lab
Islet Cell Dysfunction Group 1
Labcorp
Insulin, Fasting
ARUP Laboratories
Serum, C-Peptide
ARUP Laboratories
Insulin, Random
ARUP Laboratories
Insulin, Other
ARUP Laboratories