What is the Carrier Screening Test?

The Carrier Screening Test or Carrier Genetic Test (CGT) is an important genetic test when planning a family, because it helps to determine the risk of having a child with a genetic disease. This test tells us whether the parents carry one or more recessive genetic mutations.


CGT_DirigidoCarriers are usually healthy but when two parents carry a mutation in the same gene they might produce an affected child.

 Anyone, without knowing, can be a carrier of one or more mutations.

The Carrier Screening Test allows us to know which genes are altered in each person.

Why do a Carrier Screening Test?

Generally, parents only realize they are carriers of serious genetic disorders after an affected child is born. Genetic disorders can’t be cured, but they can be prevented. It is the only clinically validated test.

Who is the Carrier Screening Test for?

We all have changes in our genes and the carrier screening test allows us to find out whether they could cause a disease in our children. The test is recommended in the following cases:

Before attempting a pregnancy by natural means: For any woman who wants to become pregnant in order to know the risk of transmitting possible disorders to her children.
Before an assisted reproduction treatment: It is advisable to find out the risk of transmission and to be able to determine the best type of treatment in each case.
Before treatment with donor sperm or eggs: In order to be able to select a donor that doesn’t carry the same mutation as the member of the couple who will provide the gametes (eggs or sperm).


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