Insulin Tolerance
Test Mnemonic
INTOLR
CPT Codes
- 82951 - QTY (1)
- 80435 - QTY (1)
Includes
- Growth Hormone, Basal
- Growth Hormone, 15 min
- Glucose, 45 min
- Growth Hormone, 30 min
- Growth Hormone, 45 min
- Growth Hormone, 60 min
- Glucose, Basal
- Glucose, 15 min
- Glucose, 30 min
- Glucose, 60 min
Performing Laboratory
Cleveland Clinic Laboratories
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Plasma | Potassium oxalate/sodium fluoride (Gray) | Refrigerated | ||
| 1 mL | Serum | SST (Gold) | Refrigerated |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | 8 hours |
| Refrigerated | 7 days |
| Frozen | 90 days |
Days Performed
Refer to individual components
Turnaround Time
Refer to individual components
Methodology
| Name | Description |
|---|---|
| Immunoenzymatic Assay | |
| Enzymatic |
Reference Range
Special Info
Draw baseline specimens, then specimens at 15, 30, 45 and 60 minutes post administration of medication.
Clinical Info
Evaluation of suspected growth hormone deficiency.