Blastocyst culture

Growing embryos to day 5–6 (blastocyst) before transfer or freezing, rather than day 2–3.

Established step

This is an established, standard technique used in specific situations — not a limited-evidence add-on.

The verdict

A widely used, generally accepted step — not a limited-evidence add-on, though it may appear as a separate charge.

Evidence positions on Blastocyst culture from HFEA, ESHRE, NICE and ISAR
Body	Position
HFEA	Not on HFEA's rated listfor chance of a baby
ESHRE	Standard practice An established standard technique, not on ESHRE's limited-evidence add-on list.
NICE	Standard practice Extended culture to blastocyst is standard practice, not a limited-evidence add-on.
ISAR	Standard practice An established standard step, not a limited-evidence add-on.

Cochrane evidence base

Fresh blastocyst transfer may modestly improve live birth in the fresh cycle, though cumulative live-birth rates are broadly similar to cleavage-stage; standard in most modern labs.

In India

~₹10,000–25,000 when billed separately.

Sources

Cochrane — blastocyst vs cleavage-stage transfer

Take this further

Last reviewed 13 July 2026.