system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which of the following is true about obstructive azoospermia:
assistant
The correct answer is  Normal FSH and LH level indicate an obstructive lesion in the vas or epididymis. High FSH indicates gonadal failure. 
Low FSH Indicates pituitary or hypothalamic failure.