Aids in the detection of insulinoma. Do not use to diagnose diabetes mellitus.
Quantitative Chemiluminescent Immunoassay
Tue, Thu
1-6 days
Patient must fast for 12-15 hours prior to collection.
Serum Separator Tube (SST) or Plain Red. Also acceptable: Lavender (K2EDTA) or Pink (K2EDTA).
Separate from cells ASAP or within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube and freeze immediately. (Min: 0.2 mL)
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
Grossly hemolyzed specimens.
After separation from cells: Ambient: Unacceptable; Refrigerated: 48 hours; Frozen: 2 months
Effective May 19, 2014
Age | Reference Interval |
---|---|
0-17 years | Not established |
18 years and older | Less than or equal to 8.0 pmol/L |
Fasting intact proinsulin values above the reference interval indicate a possible insulin secreting pancreatic tumor (insulinoma) in patients with hypoglycemia. Fasting intact proinsulin values range from 3 to 50 pmol/L in patients with untreated type 2 diabetes.
FDA
Hotline History
84206
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0070112 | Proinsulin, Intact | 10451-3 |
- Proinsulin, Plasma