Growth Hormone Suppression
Test Mnemonic
GHSUP
CPT Codes
- 80430 - QTY (1)
- 82951 - QTY (1)
Includes
- Growth Hormone Basal
- Growth Hormone 30 min
- Growth Hormone 60 min
- Growth Hormone 120 min
- Glucose 30 min
- Glucose 60 min
- Glucose 120 min
- Growth Hormone 90 min
- Glucose Basal
- Glucose 90 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 | Patient should be fasting at least 10 hours prior to the test. Collect a baseline specimen, then administer 75 grams of dextrose within 5 minutes. Collect specimens at 30, 60, 90, and 120 minutes post dextrose administration. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | SST (Gold) and Potassium oxalate/sodium fluoride (Gray): 24 hours |
| Refrigerated | SST (Gold): 7 days Potassium oxalate/sodium fluoride (Gray): 24 hours |
| Frozen | SST (Gold): 14 days Potassium oxalate/sodium fluoride (Gray): Unacceptable |
Days Performed
Mon - Fri
Turnaround Time
1 - 3 days
Methodology
| Name | Description |
|---|---|
| Immunoenzymatic Assay | |
| Enzymatic |
Reference Range
Special Info
Patient Preparation: "Patient should be fasting at least 10 hours prior to the test. Collect a baseline specimen, then administer 75 grams of dextrose within 5 minutes. Collect specimens at 30, 60, 90, and 120 minutes post dextrose administration."
Clinical Info
To confirm diagnosis of active acromegaly.