Insulin, 90 Minutes
Also known as: INSULIN 90
Use
The Insulin, 90 Minutes test measures insulin levels after a 90-minute mark and is used in evaluating insulin response to glucose, typically in conjunction with glucose challenge tests. It can help in the diagnosis and management of insulin-related disorders such as insulinoma, diabetes, and insulin resistance. Clinicians leverage this test to understand how the body processes insulin and manages blood sugar levels.
Special Instructions
The test requires specific patient preparation and a serum separator tube for specimen collection. Allow the specimen to clot at room temperature and separate serum or plasma from cells as soon as possible or within two hours of collection. Transfer the specimen into an ARUP Standard Transport Tube.
Limitations
The test can have cross-reactivity with insulin analogs like insulin aspart, insulin glargine, and insulin lispro. Insulin detemir shows about 50% cross-reactivity, whereas insulin glulisine has negligible reactivity of less than 3%. These factors should be considered while interpreting the results. Furthermore, certain conditions can make specimens unacceptable, including heparinized plasma and hemolyzed specimens.
FDA ApprovedNew York Approved
Methodology
Immunoassay (CLIA)
Biomarkers
LOINC Codes
- 27330-0
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1 mL
Minimum Volume
0.4 mL
Container
ARUP Standard Transport Tube
Collection Instructions
Allow specimen to clot completely at room temperature. Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer to an ARUP Standard Transport Tube.
Causes for Rejection
Heparinized plasma, I.V. fluid, vitreous fluid, gray (sodium fluoride/potassium oxalate), hemolyzed specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 8 hours |
| Refrigerated | 1 week |
| Frozen | 1 month |