Embryologist at a microscope next to a screen showing sperm cells

Calcium Ionophore Activation

Calcium ionophore activation is a specialised laboratory method offered to selected IVF and ICSI patients with a history of poor embryonic development.

It is designed to support blastocyst formation in cases where embryos have previously failed to reach the later stages of development.

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What is calcium ionophore?

Calcium ionophores are molecules that increase the calcium levels inside cells.

Calcium plays a critical role in triggering cellular processes needed for embryonic development.

In some patients, these signals may be weak or absent. Ionophore exposure can help mimic or enhance these natural processes.

Baby on bed with mum
Infographic in English on calcium ionophore activation in IVF treatment

How does it work in IVF treatment?

After fertilisation has occurred in the lab, selected embryos are briefly exposed to a dose of calcium ionophore.

This exposure is short and tightly controlled by our skilled embryology team.

The aim is to stimulate the embryo’s internal calcium signalling, which plays a key role in supporting further cell division and development toward the blastocyst stage.

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Who may benefit from calcium ionophore treatment?

The treatment may be considered for patients who have experienced:

  • Poor embryonic development across multiple IVF/ICSI cycles
  • Embryos that consistently fail to develop into blastocysts despite normal fertilisation
  • Unexplained embryo developmental arrest

Our embryologists and fertility specialists assess each case individually.

Embryologist working in the laboratory

Is the method effective and safe?

Studies suggest that calcium ionophore activation can improve fertilisation and blastocyst rates in selected cases.

No harmful effects on embryo viability or genetics have been reported when used appropriately.

However, long-term data are still limited, and the method is an optional “add-on” treatment. More large-scale, long-term studies are needed to confirm the efficacy and safety of this approach across broader patient populations.

Egg oven

An individualised approach to your treatment

At Diers, we carefully plan each treatment based on your medical history and specific circumstances.

Calcium ionophore activation is not part of our standard protocol, but may be offered when there is a clear medical reason to support embryo development.

Contact us to find out whether calcium ionophore activation could support your IVF treatment.
Scanning image of embryo, Diers