Comparison of hhCG With hCG+ß in the Early Prediction of Ongoing Pregnancy.

Comparison of hhCG With hCG+ß in the Early Prediction of Ongoing Pregnancy After In-vitro Fertilization and Embryo Transfer.

Proof of concept study for the prediction of ongoing pregnancy in women undergoing In-Vitro Fertilization (IVF), using hyperglycosylated human chorionic gonadotropin (hhCG), early after In-Vitro Fertilization and fresh Embryo Transfer (IVF-ET).

Inclusion criteria:

• Written informed consent
• Patients undergoing their first or second IVF-ET cycle
• Age 18-45 years
• Use of Ovitrelle for final follicular maturation and luteinization
• Fresh or Frozen day-5 blastocysts transrer (Autologus or Egg donation)

Exclusion criteria:

• Gestational surrogacy (patient's eggs used for pregnancy in a surrogate mother)
• Canceled IVF cycles
• GnRH agonist triggering cycles in the case of fresh ET.