ReceptivaDx is a first of its kind test for the detection of inflammation of the uterine lining most commonly associated with endometriosis, a leading cause of infertility and implantation failure. Women testing positive for ReceptivaDx are 5 times less likely to succeed in IVF than women testing negative. ReceptivaDx (BCL6 Test) Predicts Chances for a Successful Transfer and Successful Pregnancy.