how can i know that a man is sterile

Question: how can i know that a man is sterile
- Keywords:
  sterile
Asked by wych22rue on 22 Jul 2025.
- Brayan Odeka answered on 22 Jul 2025:
  
  Just like you can’t tell if a phone works without turning it on — you can’t know if a man is fertile without testing his sperm!
  
  Doctors check if a man is sterile by testing his sperm. This is called a semen analysis, and it checks:
  
  How many sperm he has (count)
  
  How well they move (motility)
  
  Their shape and health
  
  If sperm are missing or weak, it might mean he’s sterile.

Question: how can i know that a man is sterile