For artificial insemination to be successful and pregnancy can be achieved, it is necessary for the woman to have a normal ovarian reserve and be able to ovulate naturally, either spontaneously or with the help of hormone medications.
For this reason, in general, women aged more than 37 years are rarely referred to IUI, since the ovarian reserve starts diminishing from age 35 onwards until its complete depletion between 45 and 55.
Another basic requirement for the patient, regardless of whether she is undergoing AIH or AID, is having tubal patency in at least one tube.