Endometrial Biopsy Protocol for In Vitro Fertilization (IVF)

Comparing Timing and Number of Endometrial Biopsies in IVF Treatment and Identifying Biochemical Markers to Predict Endometrial Receptivity

Endometrial biopsy has been shown to improve IVF pregnancy and live birth rates. The optimal time of performing the biopsy is yet to be established.

In this study, the investigators will compare different temporal timing of the biopsies with regards to the menstrual cycle and their affect on the success rates of the treatment.

Inclusion Criteria:

• normal menstrual cycle
• between 1-6 previous failed IVF cycles
• normal hormonal profile

Exclusion Criteria:

• intrauterine procedure in last 3 months
• hydrosalpinx
• intrauterine lesion /malformation