- Confirmed diagnosis of GHD (growth hormone deficiency) as defined by two different GH (growth hormone) stimulation tests, peak GH level below or equal to 7.0 ng/ml. For children with three or more pituitary hormone deficiencies only one GH stimulation test will be needed. If in accordance with country specific practice, growth hormone deficiency can be defined by only one GH stimulation test, peak GH level below or equal to 7.0 ng/ml.