DNA test for siblings

One of the most common DNA tests, in addition to the paternity test, is the sibling test or kinship test between siblings. This test determines whether two or more subjects are siblings on the mother’s and father’s side, only on the side of one of the parents, or if, on the contrary, they are not related.

If the performance of this type of genetic test is related to a family inheritance, a sibling test must be performed that can be verified as valid evidence in a Civil Registry or a Court of Justice and that offers results with the greatest possible accuracy.

The genetic study of sibling relationship is performed by investigating nuclear DNA markers to establish the amount of DNA they have in common. However, in the case of two male siblings, the Y chromosome test is much more precise if you want to know if both siblings have the same father.

During the performance of this DNA test between siblings, the participation of additional family members is usually essential. In particular, it is usually very useful to have the maternal figure. In addition, if the mother participates, the subjects can request the mitochondrial DNA test to find out whether or not they have the same maternal line. The DNA test between siblings or sibling test is carried out in laboratories specialized in genetic analysis, since there are multiple options depending on the information you want to obtain.

At LabGenetics we carry out the DNA test between siblings in a 100% reliable and safe way, and we advise our clients to carry out the most precise tests possible according to the information they want to know. Contact us to receive additional information about the kinship test, to request an appointment or to consult prices, all while maintaining the utmost respect for the privacy and anonymity of all our clients.