Test Information:
Insulin is formed from precursor, proinsulin, in the beta cells of the pancreas. Immunoassays for insulin have been widely used to provide supplementary information, first, for the diagnosis of diabetes mellitus and, second, for the differential diagnosis of fasting hypoglycemia to discriminate between insulinoma and factitious hypoglycemia.
Specimen Container:
Gold Top SST Tube (with clot activator) or Red Top Tube (Plain) – USE PLASTIC TUBE
Specimen Type:
Serum
Required Volume:
2 mL
Patient Preparation:
6 to 10 hours fasting (Reference: American Diabetes Association – Standard of Cae Diabetes 2024)
Notes:
The following information must be provided upon specimen endorsement via Internal Message or Remarks.
1. Date and Time of last meal.
Storage & Stability
(Before Processing)
- Storage: 2 to 8°C
Stability: 2 days - Storage: 20 to 25°C
Stability: 4 hours - Storage: – 20°C
Stability: 6 months
FREEZE ONLY ONCE!
Transport Temperature:
Ref (2°C to 8°C)
Test Category:
Routine
Test Schedule:
Daily
Results Availability:
Within 4 hours