Comparison of pregnancy rates following transfer of one embryo versus two in patients under going fertility treatment

Comparing the results of one blastocyst transfer versus two in good prognosis patients going through in vitro fertilisation (IVF) with intra cytoplasmic sperm injections (ICSI) and embryo transfer (ET): a prospective, randomized study.

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN69937179

Enrollment

200

Registered

2012-03-15

Start date

2008-10-28

Completion date

Unknown

Last updated

2015-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Infertility Pregnancy and Childbirth Female infertility

Interventions

Patients are randomised to either one of the two groups: 1. Receive one embryo 2. Receive two embryos

Eligibility

Sex/Gender

Female

Inclusion criteria

Inclusion criteria: 1. Patients going through a cycle of IVF/ET 2. Have signed a consent form 3. Age 18 - 35 years old 4. Follicle-stimulating hormone (FSH) level on cycle day 2 or 3 < 10

Exclusion criteria

Exclusion criteria: 1. Day 2 or 3 FSH level > 10 2. Previous history of poor response to stimulation drugs 3. Previous history of more than one failed IVF cycle

Design outcomes

Primary

Measure	Time frame
Pregnancy rate	—

Secondary

Measure	Time frame
1. Implanation rate 2. Delivery rate 3. Miscarriage rate	—

Countries

United States of America

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026