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Being a stool donor

Our stool donors are a key part of our mission to become the first company to commercialize in the EU the first biologic medicine based on intestinal microbiota.

The donor recruitment process is meticulous and focuses on finding healthy, committed and loyal donors, who are looking to save lives together with Mikrobiomik.

Donors, we still need you to continue saving lives… please help us with your “small efforts”

How to be a stool donor?

Necessary requirements: be a resident in Bizkaia and be between 18 and 50 years old.


Online form

Answer all the questions in a brief health questionnaire so that our medical team can evaluate the eligibility.

You must be a resident of Bizkaia and be between 18 and 50 years old.


Medical interview

The interview will be completely confidential

The specialists are going to consider if the candidate is suitable or not.


Clinical analysis

The candidate will have to take a blood sample and a PCR test. In addition, He/She will have to provide 3 stool samples taken in 3 consecutive days.

All this without any cost for the future donor.



If the results of the analysis certify that can be a donor, the donations will take place in our installations in the Technological Park of Derio.

There will be between 2 and 5 donations per week, for a maximum of 2 months.