Frozen-thawed Embryo Transfer in a Natural Cycle: hCG Triggering Versus LH Home Test

A Protocol for a Randomized, Two-Parallel-group Study to Compare the Efficacy of Testing LH Surge at Home Versus Medically Triggered Ovulation With hCG (Pregnyl®) in the Naturally Stimulated Cycle in the Frozen-thawed Embryo Transfer

The primary aim of this study is to find out if ovulation triggered with hCG provides any additional benefit in comparison to spontaneous LH surge measured with the LH surge home test when transferring frozen-thawed embryo in a natural cycle.

The aim of this study is to find out the best method for the ovulation triggering. We study the live birth rates in the both groups.

Inclusion Criteria:

• - Patient with IVF or ICSI cycle and therefore having frozen-thawed embryos
• Regular menstruation cycle
• Patient's willingness to participate in the study

Exclusion Criteria:

• - Irregular menstrual cycle demanding preparing endometrium with hormones for frozen-thawed embryo
• No frozen embryos after IVF cycle
• Allergy to Pregnyl® or some of its ingredients in the medication or other contraindications due to Pregnyl®