This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
TRH stimulation testing is useful in diagnosis of disorders of following hormones : 
Select and explain. 
A. Insulin, B. ACTH, C. Growth hormone, D. Growth hormone
C: Growth hormone
Answer: C: Growth hormone 
Explanation: C i.e. Growth hormoneAbout 60% of patients with GH - secreting tumours may exhibit paradoxical GH response to TRH stimulation. TRH induced GH stimulation may occur in acromegalyQ, renal failure & depression.