ASET -
Asynchronous embryo transfer

Asynchronous embryo transfer or ASET is a method in which two embryos at different stages of cultivation are transferred. The difference in the age of the embryos is normally around 24 – 48 hours. Typically, one embryo is transferred after 72 hours and the other around 120 hours after fertilisation.

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For whom is the method suitable?

In vitro fertilisation (IVF)

Women who have repeatedly failed to nest quality embryos in an optimally prepared endometrium and our doctors suspect that an endometrial receptivity shift may be the reason

For patients who, for organizational or personal reasons, it is not possible to schedule an ERA or beReady examination.

In vitro fertilisation (IVF)

The asynchronous embryo transfer method is one part of our IVF treatment offerings. Your physician will recommend it in cases where it will be beneficial to increase the chances of success in embryo implantation. If you would like to discuss what specific treatment methods are suitable for you with our specialist, please contact us. Your IVF coordinators will arrange an initial no-obligation consultation with your doctor.

Additional laboratory methods that can increase the success rate of treatment

Laboratory methods

PGT‑M, PGT-SR & PGT‑A

Preimplantation genetic screening and diagnosis — prevention of nesting failure and transmission of genetic defects.

Sperm retrieval: MESA/TESE

Modern microsurgical sperm collection methods from the testicles and epididymis in the case of low / zero sperm concentration.

Sperm selection: MICHSS

Selection of the best quality sperm based on concentration and motility using a microfluidic chip.

Egg fertilisation: ICSI

Intracytoplasmic injection of sperm directly into the egg in order to overcome barriers and increase chances of fertilisation.

Egg fertilisation: OptimFert

An innovative polarising microscopy method for monitoring egg maturity to determine the correct timing for fertilisation.

Extended embryo culturing

Monitored embryo development over 48 hours to select the embryo with the highest potential for implantation.

Time-lapse embryo monitoring

A real-time embryo development tracking system to select the embryos with the highest potential for nesting.

Embryo nesting support: EmbryoGlue

A special solution for protecting the embryo and facilitating its connection with the uterine lining.

Embryo nesting support: LAZT

Laser-assisted hatching is a non-invasive method for facilitating an embryo to leave the protective shell and promote nesting.

Endometrium receptivity test

ERA test, beReady — advanced analytical methods of the genetic profile of the uterine lining to determine the timing of implantation.

Preservation of cells: Vitrification

Preservation of eggs and embryos for potential future use by fast, gentle and efficient freezing.

Sperm selection: LAISS

Detection of viable sperm in a non-motile sample using a non-invasive laser.