Understanding Lab Tests for Gigantism
Written by Private MD Labs Medical Writing Team • Last Updated: September 8, 2025
Gigantism is a rare hormonal disorder characterized by excessive growth and height significantly above average, typically beginning in childhood. This condition is caused by overproduction of growth hormone, usually due to a noncancerous tumor (adenoma) in the pituitary gland. Blood testing is essential for diagnosing this condition by measuring growth hormone levels.
Recommended Test
Human Growth Hormone
This test measures the level of growth hormone in the blood, which is the primary diagnostic marker for gigantism. Elevated growth hormone levels indicate overproduction by the pituitary gland, typically caused by a pituitary adenoma. This test is essential for confirming the diagnosis and monitoring treatment effectiveness.
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How Gigantism is Diagnosed
While physical examination and imaging studies help evaluate the condition, blood tests are fundamental for confirming the diagnosis of gigantism. These tests directly measure growth hormone levels in the blood, which are typically elevated in patients with this condition. Early diagnosis through proper testing is crucial for managing the condition and preventing complications.
Understanding Your Results
Growth hormone levels naturally fluctuate throughout the day, but consistently elevated levels may indicate gigantism. Your healthcare provider will interpret your results in conjunction with your symptoms, physical examination, and potentially additional tests to confirm the diagnosis and develop an appropriate treatment plan.
Important Considerations
The information here is for educational purposes only and is not a substitute for professional medical advice. Always consult with a healthcare provider for diagnosis and treatment.
