Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Acromegaly ?
    ### Response:
    Blood tests
                
If acromegaly is suspected, a doctor must measure the GH level in a persons blood to determine if it is elevated. However, a single measurement of an elevated blood GH level is not enough to diagnose acromegaly: Because GH is secreted by the pituitary in impulses, or spurts, its concentration in the blood can vary widely from minute to minute.
    