After IUI, it’s important to allow sufficient time for implantation and the production of the pregnancy hormone. As a general guideline, most experts recommend waiting 14-16 days post-IUI to take a pregnancy test. This aligns with the time it typically takes for the fertilized egg to implant and develop detectable levels of the hormone human chorionic gonadotropin (hCG) in the urine. Home pregnancy tests typically measure hCG levels, so waiting the recommended time increases the likelihood of an accurate result.