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Insulin
Test Code561
CPT Codes
83525
Preferred Specimen
1 mL serum
Patient Preparation
Fasting specimen required
Minimum Volume
0.5 mL
Instructions
Unable to add insulin testing unless sample was submitted frozen
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 8 hours
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis • Plasma • Grossly icteric
Methodology
Immunoassay (IA)
Setup Schedule
A.M. Sets up 5 days a week.
Clinical Significance
For diagnosis and monitoring of diabetes and insulin-secreting tumors.
