Multiple Embryo Transfer Rules: How Countries Differ on Twin-Risk Policy

A specific regulatory-practice comparison with real implications for your pregnancy risk profile.

Bottom line up front: Policies and clinical norms around transferring more than one embryo per cycle vary by country — a detail with real implications for your twin-pregnancy risk profile, worth understanding before choosing a destination or agreeing to a specific transfer plan.

Why this policy area matters clinically

Twin and higher-order pregnancies carry meaningfully elevated risks — preterm birth, low birth weight, and maternal complications among them — which is why elective single embryo transfer (eSET) has become the preferred practice in many leading clinics globally, reducing multiple-pregnancy rates substantially.

How clinic practice varies

Some destinations and clinics have more formally adopted eSET as standard practice; others follow more permissive multiple-transfer norms, sometimes patient-requested. Understanding your specific clinic's default practice and philosophy matters here.

Questions worth asking any clinic

See colombianivf.com for Colombia-specific clinic practice on this question.

The Takeaway

Ask directly about a clinic's default transfer-number practice and reasoning — this is a genuine risk-relevant decision, not just a logistics detail.