My son is having a human growth stimulation test and I want more information on its purpose?

GH testing. not sure how old your son is.
The purpose of this growth hormone testing is to
see if enough growth hormone is present for proper
height growth. This hormone is stimulated by the pituitary g;and in the brain and can be measured. If
there is deficiency, they might treat with extra GH to help with growth. Welcome to health tap, Dr. ivy Fisher.