Insulin Resistance Test
Order Name
INSULIN R
Test Number: 2006775
Revision Date 05/09/2025
Test Number: 2006775
Revision Date 05/09/2025
| Test Name | Methodology | LOINC Code |
|---|---|---|
|
Insulin Total, Fasting
|
Chemiluminescence Assay | 27873-9 |
|
Glucose Total, Fasting
|
Hexokinase | 1558-6 |
|
Insulin 2 Hour Total
|
Chemiluminescence Assay | 27826-7 |
|
Glucose 2 Hour Total
|
Hexokinase | 20436-2 |
| SPECIMEN REQUIREMENTS | ||||
|---|---|---|---|---|
| Specimen | Specimen Volume (min) | Specimen Type | Specimen Container | Transport Environment |
| Preferred | 2 mL (0.5) each | Serum and Plasma | Both Sodium Floride (Gray) and Clot Activator SST | See Instructions |
| Instructions | Overnight fasting is required. Collect Both Sodium Floride (Gray) and Clot Activator SST tubes for each draw time 1) Draw a fasting glucose and insulin. 2) Administer 75 gms of glucola, consume within 5min. 3) Draw a 2 hour glucose and insulin (post glucola). Note time drawn on tubes. Note: The Clot Activator SST tubes for the Insulin testing and should be allowed to clot then centrifuge aliquot 2mL(0.5mL) Serum into plastic aliquot tube and freeze ASAP. The Insulin Stability: Ambient 8 hours, Refrigerated 2 days, Frozen 7 days. The Stability for the Glucose: Ambient 8 hours; Refrigerated 7 days, Frozen 3 months (Fluoride preserved plasma samples are stable at room temperature for 24 hours.) Insulin assay not recommended for patients with insulin autoantibody. Use Free Insulin assay if autoantibody positive. |
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| GENERAL INFORMATION | |
|---|---|
| Testing Schedule | Mon - Fri |
| Expected TAT | 2-3 days |
| CPT Code(s) | 82947, 82952, 83525x2 |
| Lab Section | Chemistry |