Insulin, 120 Minutes
Also known as: INSULIN120
Use
The Insulin, 120 Minutes test is used to measure the level of insulin in the blood 120 minutes after a glucose challenge. It helps in the assessment of insulin sensitivity and the diagnosis of disorders related to insulin metabolism. This test is significant for patients undergoing glucose tolerance tests, providing crucial information about insulin response in conditions such as insulin resistance and diabetes.
Special Instructions
The test requires precise timing and handling. Patients undergoing this test should follow the specific instructions regarding the glucose challenge. It's important to process the serum or plasma promptly within two hours of collection to ensure accurate results.
Limitations
This test reacts on a nearly equimolar basis with insulin analogs such as insulin aspart, insulin glargine, and insulin lispro, and it shows approximately 50% cross-reactivity with insulin detemir. Reactivity with insulin glulisine is negligible. These cross-reactivities should be considered when interpreting test results in patients who are receiving these insulin analogs.
New York Approved
Methodology
Immunoassay (CLIA)
Biomarkers
LOINC Codes
- 27826-7
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.
Storage Instructions
Frozen.
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 |