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: Gynaecology & Obstetrics
32 year old male presents at Infertility clinic with history of azoospermia on semen analysis. His serum FSH is increased and testosterone levels are decreased. Where is site of block in this case? 
Select and explain. 
A. Testicular, B. Post-testicular, C. Hypothalamus, D. Pituitary
A: Testicular
Answer: A: Testicular 
Explanation: Site of Block


Hormones







Testicular
Post-testicular
Hypothalamus
Pituitary


FSH↑. Testosterone ↓
			FSH normal, Testosterone Normal
			FSH↓, Testosterone↓
			FSH↓, Testosterone↓