Normal range: Adults: up to 7 ng/mL; Child: up to 10 ng/mL
Comment: GH secretion is not uniform throughout the day, and the variations are so unpredictable that random serum GH values maybe within the interval in patients with acromegaly or pituitary gigantism. The key to the diagnosis is to demonstrate that GH is not suppressed normally in response to a standard glucose load. Using the 100 g glucose suppression test
Sample: serum, fasting