A number of hormonal tests will be carried out by a reproductive fertility specialist to see if a reversible cause for the problem can be found. If a cause is found then it will be treated and a repeat analysis will be performed 8-12 weeks later.
If the problem cannot be treated then you need to resort to Assisted Reproductive Technology (ART). This will be either in-vitro fertilization (IVF) or Intracytoplasmic sperm injection (ICSI).
IVF is the retrieval of eggs from the female and the fertilization of the eggs with the sperm. ICSI is the retrieval of eggs from the female and the fertilization of the eggs with the sperm by injecting one sperm into each egg. If the male has no sperm then he can consider using donor sperm.