Full surrogacy (also known as Host or Gestational) – Full surrogacy involves the implantation of an embryo created using either:
- the eggs and sperm of the intended parents
- a donated egg fertilised with sperm from the intended father
- an embryo created using donor eggs and sperm.
Partial surrogacy (also known Straight or Traditional) – Partial surrogacy involves sperm from the intended father and an egg from the surrogate. Here fertilisation is (usually) done by artificial insemination or intrauterine insemination (IUI).