When it comes to fertility treatments, there are a lot of acronyms and technical terms thrown around. IVF and IUI are two such terms that are often used interchangeably, but they actually refer to two different fertility treatments. IVF (in vitro fertilization) is a type of fertility treatment where eggs are retrieved from the ovaries and fertilized with sperm in a lab. IUI (intrauterine insemination) is a type of fertility treatment where sperm is inserted directly into the uterus. So, what’s the difference between IVF and IUI? Keep reading to find out.