It depends on the condition. Like, a guy might have sperm that don't swim but the DNA is fine. Or there could be a lack of chemotaxis due to something going with the sperm or the woman's body, so the sperm will be unable to hone in on the egg's location. There are a variety of ways a couple can have difficulty conceiving that IUI won't be able to help, but IUI is less invasive and less expensive than IVF so it's a good idea for people know their options before resorting to IVF.
This is why iui is the superior process but not as many ppl take it cause they think ivf is much more successful than it really is
It depends on the condition. Like, a guy might have sperm that don't swim but the DNA is fine. Or there could be a lack of chemotaxis due to something going with the sperm or the woman's body, so the sperm will be unable to hone in on the egg's location. There are a variety of ways a couple can have difficulty conceiving that IUI won't be able to help, but IUI is less invasive and less expensive than IVF so it's a good idea for people know their options before resorting to IVF.