Genetic compatibility test: Are we compatible?

El genetic compatibility test It is a test that is increasingly requested by individuals and couples who want to have children and want to know if there is any hidden genetic risk, even when both are healthy and have no known family history.

In this article we explain what this test is, how it is performed, when it is indicated and why it is essential for making informed medical decisions before pregnancy.

Even without clinical symptoms, a person can carry recessive genetic mutations without knowing it. When both partners share a mutation in the same gene, there is a risk of passing on an inherited disease to their offspring. For this reason, genetic compatibility testing has become a key tool in responsible reproductive planning, both for natural pregnancies and assisted reproductive treatments.

What is a genetic compatibility test?

The genetic compatibility test, also known genetic matchingIt is a test in which the results obtained by each member of the couple are compared after performing a known test , the carrier screening. The carrier screening it's a test screening which analyzes whether a person is a carrier of recessive genetic mutations that could be passed on to their offspring.

Being a healthy carrier does not mean having a disease or developing symptoms. However, if both partners are carriers from a genetic mutation in the same geneThere is a real risk of having a child who manifests the disease.

What types of diseases does the genetic compatibility test detect?

The test allows the identification of mutations related to recessive genetic diseases that can seriously affect health when inherited from both parents.

Among the most frequent and clinically relevant are:

• Cystic Fibrosiswhich affects the lungs and digestive system
• Spinal muscular atrophy (SMA)characterized by progressive muscle weakness
• Fragile X syndrome, one of the main hereditary causes of intellectual disability
• Thalassemiasevere hematological disorder
• Other rare diseases with high clinical impact

Detect the presence of mutations in both parents Pre-conception allows for anticipation and risk reduction.

How does this test differ from other genetic tests?

Unlike postnatal tests such as the Heel Prick Test, the genetic compatibility test It has a preventative approach. It is carried out before pregnancy, which allows:

• Anticipating inherited genetic risks
• Making medical decisions with reliable information
• Prevent the transmission of serious diseases
• Plan safer reproductive treatments

What does it mean to be a healthy carrier?

It is estimated that any person can carry between 3 and 5 recessive genetic mutations without knowing it.

Being a healthy carrier:

• It does not imply developing the disease.
• It does not affect one's own health
• It only poses a risk if both partners carry a mutation in the same gene.

In that case, there is a probability of 25% that the child will inherit the genetic disease.

How is the genetic compatibility test performed?

The genetic compatibility test is a simple, safe, and risk-free test:

• It is done by means of a blood sample
• No fasting or prior preparation is required.
• It uses advanced genetic sequencing technology
• It offers highly reliable results

Technology used at Inebir

At Inebir we use technology NGS (next-generation massive sequencing)which allows simultaneous analysis More than 300 recessive genetic diseases.

The results are delivered in approximately 3 to 4 weeks and include:

• Detailed genetic report
• Personalized medical interpretation
• Clinical recommendations tailored to each case

What is the purpose of a genetic compatibility test before pregnancy?

El genetic compatibility test It is a preventative tool that helps couples make informed decisions in different scenarios.

1. Detect genetic carriers

Even without a family history, it allows identification of whether one or both people are carriers of enfermedades hereditary.

2. Prevent risks and choose safe options

If genetic incompatibility exists, alternatives such as the following may be considered:

• Knowledge of the possibility of having an affected child in order to perform an amniocentesis or diagnostic test that allows the child to be cured if the disease is susceptible to curative treatment.
• In vitro fertilization (IVF) with preimplantation genetic diagnosis (PGD) in cases where the disease has no treatment. 
• Use of genetically compatible donated gametes
• Specialized medical monitoring during pregnancy

3. Safe selection in donor treatments

In treatments involving egg or sperm donation, the test ensures genetic compatibility between donor and recipient, minimizing risks.

When is it appropriate to perform a genetic compatibility test?

Genetic compatibility testing is especially recommended in the following cases:

• Couples who want a natural pregnancy
• People who are going to start any type of fertility treatment
• Situations without family genetic information (adoption, donation)

Taking this test before having children would allow you to know the risks of having sick children and make reproductive decisions.

Once we know which diseases each member of the couple carries, a comparative study is conducted to analyze whether she carries any of the diseases he carries, and vice versa. If there is a match, there is a risk of having offspring with the disease.

Frequently asked questions about the genetic compatibility test

Is genetic compatibility testing mandatory?

It is not mandatory, but it is highly recommended if you are looking for responsible and safe reproductive planning.

Does it guarantee a pregnancy free of genetic risks?

There is no such thing as zero risk, but genetic compatibility testing significantly reduces the likelihood of transmitting serious hereditary diseases.

Is genetic compatibility testing necessary if we are healthy?

Yes. Even if both partners are healthy, genetic compatibility testing can detect recessive mutations without clinical symptoms.

Should I repeat the test?

The Carrier Test does not need to be repeated, as genetics do not change throughout life. Only the genetic compatibility test needs to be repeated.Genetic matchingThis is not the case if you change partners or if the fertility treatment involves a new donor, since each person carries different diseases. However, the genetic compatibility test within the same couple is valid indefinitely. 

Prevent today to make better decisions tomorrow.

El genetic compatibility test It allows one to anticipate hereditary risks not They are visible. Having this information before pregnancy offers peace of mind, opens up safe reproductive options, and facilitates medical decisions based on scientific evidence.

At Inebir, we support you with cutting-edge technology, medical rigor, and personalized, humane care so you can start your reproductive project with confidence.

Take the first step, Consult with our team of geneticists and discover our genetic testing in fertility. Because genetics can't be seen... but it can be prevented.

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