Women should wait at least two weeks after IVF before taking a pregnancy test. Tests taken before two weeks have passed can deliver false results, according to Shady Grove Fertility.
Once the IVF process is complete, the body reacts in the same way it does to a normal pregnancy. It takes several days for a fertilized egg to implant in a women's uterus and begin emitting hormones in large enough amounts to be detected in a pregnancy test, notes Shady Grove Fertility. During the two-week waiting period, it is recommended that women act as if they are pregnant by eating healthy foods and avoiding alcohol, caffeine and smoking. Pregnancy tests performed by a doctor are always more reliable than home pregnancy tests.