Growth Hormone Suppression by Glucose Test
Also known as: Oral Glucose Tolerance Test for Growth Hormone, GH Suppression Test
Growth Hormone Suppression by Glucose Test test available at DNA Labs India for ₹3,500. Uses Chemiluminescent Immunoassay on Serum samples. Results in Reports are typically available within 24-48 hours.. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr Ramarao Paidisetty
Consultant Biochemist · Reg: 21504
Last reviewed: September 7, 2026
Overview
To diagnose growth hormone deficiency and acromegaly by assessing the body's response to glucose intake.
- Test Code
- 679
- Price
- ₹3,500
- Sample Type
- Serum
- Result Time
- Reports are typically available within 24-48 hours.
- Fasting Required
- Yes (8 hours)
- Method
- Chemiluminescent Immunoassay
Sample Collection
Overnight fasting is mandatory. Patient should be at rest for 30 minutes prior to basal sample collection.
Method: Venipuncture
Laboratory Analysis
Baseline blood sample drawn, glucose solution administered orally, and additional specimens collected at 60 and 120 minutes.
Report Delivery
Monitor for any signs of hypoglycemia or discomfort. Resume normal activities and diet after test completion.
Timeline: Reports are typically available within 24-48 hours.
Patient Instructions
About This Test
Who Should Get This Test
To diagnose growth hormone deficiency and acromegaly by assessing the body's response to glucose intake.
How to Prepare
- Draw baseline specimen after an overnight fast
- Administer glucose orally at 1.75g/kg body weight (maximum 75g)
- Draw additional specimens at 60 and 120 minutes for growth hormone
- Ship samples refrigerated or frozen
- All containers must be clearly marked with time drawn and submitted with one test request form
Doctor's Notes
Reviewed by Dr Ramarao Paidisetty — MBBS, MD (Biochemistry) · Reg. No. 21504
"This test is a gold standard for diagnosing acromegaly and assessing growth hormone dynamics. Accurate interpretation requires correlation with clinical symptoms."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Hemolyzed samples
- Incorrect labeling
- Insufficient sample volume
Understanding Your Results
Growth hormone levels suppress to < 1-2 ng/mL after glucose intake.
No decrease or paradoxical increase in growth hormone level.
Normal response to glucose observed, though growth hormone may not fall to normal levels.
Blunted suppression of growth hormone levels.
If you experience symptoms of growth hormone disorders such as short stature, enlarged features, or unexplained fatigue, or if test results are abnormal.
Limitations
- ⚠May not distinguish between partial and complete growth hormone deficiency
- ⚠False positives in certain conditions like uncontrolled diabetes
- ⚠Requires multiple blood draws and patient cooperation
Risks & Considerations
- ●Mild pain or bruising at the blood draw site
- ●Rare risk of infection
- ●Possible nausea from glucose solution
Interfering Factors
- ●Medications such as corticosteroids or beta-blockers
- ●Stress or anxiety
- ●Recent surgery or illness
- ●Obesity
- ●Diabetes mellitus
Frequently Asked Questions
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Reference Laboratory Services
We serve as a reference laboratory for hospitals and clinics across India. Send samples from your facility with same-day pickup, priority processing, and results delivered through our online portal. Competitive institutional pricing available.
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