Trial to Evaluate the Clinical Utility of Non-invasive Endometrial Receptivity Test (Ora) in Patients With Implantation Failure

Inclusion Criteria

• •Experienced implantation failure with euploid or low-level mosaic (\< 30%) embryos in the past two years.
• •Female age 28-45 years.
• •Consent to undergo a simulated cycle for non-invasive optimal implantation window testing.
• •Plan to undergo a frozen embryo transfer cycle.
• •Have at least one euploid or low-level mosaic (\< 30%) frozen blastocyst.