The Genetic Compatibility Test (GCT) is used to detect any genetic mutations in the couple or in the gamete donors, in order to prevent the transmission of recessive hereditary diseases to future children.
Recessive diseases refer to all genetic alterations that occur in both copies of the same gene (one copy transmitted by the father and the other by the mother). Thanks to the genetic compatibility test, we can find out whether both parents are carriers of the same alteration.
Genetic Compatibility Test (GCT)

Genetic matching between two parents
The Genetic Compatibility Test (GCT) is used to detect any genetic mutations in the couple or in the gamete donors, in order to prevent the transmission of recessive hereditary diseases to future children.
Recessive diseases refer to all genetic alterations that occur in both copies of the same gene (one copy transmitted by the father and the other by the mother). Thanks to the genetic compatibility test, we can find out whether both parents are carriers of the same alteration.
Who is for?
The Genetic Compatibility Test is intended for all patients who wish to know this information before seeking pregnancy or undergoing fertility treatment. It is estimated that everyone carries about 15 genetic alterations and, in most cases, this does not cause any disease. Since only one copy of the gene is involved and the other copy of the gene is normal, it is sufficient to prevent the disease. Those who carry mutations are healthy and asymptomatic and there is no medical indications for carrying out this test.
However, our specialists usually advise the Genetic Compatibility Test in the case of gamete donation (semen or oocytes). Indeed, the results obtained in the carrier panels will allow a better selection of donors, avoiding coincidences in genetic alterations.
This test is a completely personal decision when there is no medical indication, and our experts will be available to offer you all the information you need to make your choice.
What is the procedure for the Genetic Compatibility Test?
The process for carrying out this test is fairly straightforward, involving taking a blood or saliva sample from patients and/or gamete donors. Once we have received the test results, we can compare the results of the two parents by genetic matching, and detect whether there is a risk of having a child suffering from one of the diseases studied by the test. If there is an incompatibility in the couple, we will then recommend that a Preimplantation Genetic Testing be carried out on the embryos obtained. In the case of donor treatment, if there is an incompatibility, the medical team will select another compatible donor.


Genetic Compatibility Test in Spain
This genetic matching allows for the early detection of possible genetic incompatibilities between prospective parents, minimising the risk of passing on genetic diseases to their offspring.
At Vida Fertility, we prioritise your peace of mind and well-being, offering you access to the latest innovations in reproductive medicine. We invite you to explore more about this test, the price of the GCT, and to make an appointment with our specialists, who are ready to guide you every step of the way on this exciting journey.
Find out how we can help you achieve your dream of starting a family by completing this form.
Frequently asked questions about genetic compatibility testing
Genetic compatibility testing for couples (or carrier testing) allows us to identify whether both partners are carriers of mutations in the same genes that could transmit recessive genetic diseases to their children.
At Vida Fertility, we analyse more than 300 hereditary diseases to reduce the risk of passing them on to the baby. It is a key tool in treatments with own eggs, gamete donation or in couples with a family history of genetic diseases.
This test is recommended before starting assisted reproduction treatment, especially if in vitro fertilisation with own gametes is to be performed or if an egg or sperm donor will be used.
It is also indicated for couples with a family history of hereditary diseases, recurrent miscarriages or implantation failures with no known cause.
Being a carrier does not mean that you have a disease, but that you can pass it on if your partner is also a carrier of the same mutated gene. In that case, there is a high risk that the embryo will inherit the disease.
That is why this test is so important: it allows us to make timely decisions, such as avoiding natural conception without genetic screening or applying techniques such as PGT-M, which selects embryos free of that mutation.
In the event of genetic incompatibility, there are solutions. The most common is to perform in vitro fertilisation with pre-implantation genetic diagnosis (PGT-MG), which allows only unaffected embryos to be transferred.
In more complex cases, the use of compatible donor gametes may also be considered. Our medical and genetic team will help you evaluate all the options and make the best decision for your reproductive future.
The price of the genetic compatibility test depends on the number of genes analysed and whether it is performed on one or both partners.
At Vida Fertility, we will offer you a personalised quote, and we will only recommend this test if it is necessary for your case. Our priority is to help you have a healthy pregnancy, with maximum safety for your future child.

Specialists in analysing the genetic compatibility of couples
‘Preventing a serious genetic disease before conception is a responsible, courageous decision made possible by science.’
I am Beatriz Lozano, director of the Vida Fertility laboratory. At our centre, we perform genetic compatibility tests on couples and in donation treatments to detect recessive mutations that could be passed on to the future baby.
Thanks to this study, we can anticipate and, if necessary, apply strategies such as PGT-M or the selection of compatible donors to prevent hereditary diseases. At Vida Fertility, we will advise you with complete transparency so that you can make the best decisions.
Patient experiences with genetic compatibility testing

It is incredible how, from absolute resignation, these doctors have lifted my spirits. They got me pregnant and gave me my life back. They live up to their name.

I had to find a way to become a mother if I wanted to pursue my career and not settle for just any partner. I made the right choice.

From the very first moment I felt I was being listened to, understood, and above all, I felt that my treatment was finally going in the right direction.

Hello dear Mrs Ortega,
you and the whole team of Vida fertility make us so happy. Finally a relief that we can be helped! Many thanks to you and all the others for the great care and exceptional quality work. This high quality means a lot to us. We hope that in 2024 we can take a healthy baby full of love into our arms.❤️

Thanks to Dr. Kathi’s support and by following all her advice, the best moment of the treatment came: I got pregnant.

I didn’t know if I would ever be able to get pregnant and now I’m in my 5th month of pregnancy.

It hasn’t been an easy journey. After the second attempt, I am happy to say that in two months I will be meeting my little girl.

Being able to experience this shared motherhood has been a gift for the two of us.
THANK YOU to this great team for everything!

We highly recommend Vida Fertility to anyone who has already given up hope and wants to give it one last try.

A huge thank you to the entire Vida Fertility team, especially to Sophie and Dr. Spies, who helped us achieve the wonderful project of expanding our family. We met a very competent team who perfectly guided and advised us on the medical choices to make at each stage of our journey. 🫶

I recommend Vida Fertility for their professionalism, humanism, and availability.
Our wonderful baby is the proof that the results are there!
Thank you!

Thanks to Vida fertility, we are now mums. Mums!!
It’s the greatest gift of all, we’re so happy!

The good feeling will certainly have contributed to the success of the treatment.
When we first contacted the clinic, I didn’t expect to become a mum so quickly, and now I even have hope that we might be able to create a sibling for our son with the remaining blastocysts.
Thank you!

I chose Vida Fertility because it’s a clinic that offers human support from the very beginning. I’m convinced that my state of mind, so influenced by the unconditional support they gave me, was key to the success of my treatment.

At the first consultation, I felt heard, understood, and full of hope again. The final transfer, our last chance, took place in February 2024… and it worked. Our little girl has brought immense joy to our whole family.

Being a single parent brings challenges, but I’d recommend anyone thinking about it to go for it. Vida Fertility made my dream come true with my first IVF.

Where can I find Vida Fertility centres in Spain?
Located in one of the best areas of Madrid, Vida Fertility fertility clinic was born from the union of a group of specialists with a high international reputation. We are able to offer our patients a unique and exclusive experience, combining personalised care with the application of the latest innovations in Assisted Reproduction Technologies (ART).
📍 C/ Palermo 15, Hortaleza, 28043 Madrid
📞 Phone number: +34 919 29 83 23
🕒 Opening hours: Monday to Friday from 8am to 7pm
In the heart of Alicante, Vida Fertility, one of the most welcoming clinics in Spain, was established. One of the keys to our success is to make accurate diagnoses, which allows us to design personalised treatments for each of our patients.
📍 Av. Óscar Esplá 1, Bajo, 03008 Alicante
📞 Phone number: +34 919 29 83 23
🕒 Opening hours: Monday to Friday from 8am to 7pm
