Why use a relationship test?

These tests are suited in instances when one of the alleged parents is not available for a DNA test and thus, carrying out a straightforward parent-to-child DNA test is not possible. For example, a DNA siblings test can be performed to establish if a biological relationship exists between potential siblings in cases when the alleged father is not available for testing.

Siblings DNA Test

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Are you really siblings? Do you share the same parents? Siblings DNA testing is ideal in situations where alleged siblings (brothers and sisters) want to confirm their biological relationship and verify if they are full siblings, half siblings or not siblings at all.

Mitochondrial DNA Test

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Are you two or more individuals who wish to find out whether or not your share the same maternal lineage? If this is the case, easyDNA Ireland offers mitochondrial DNA testing which can help scientifically confirm a shared maternal lineage between individuals.

Twins Test

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EasyDNA Ireland offers DNA twin testing services to verify if twins are identical or non-identical. A DNA test for twins is able to scientifically confirm whether twins are identical or fraternal (establishing whether they are monozygotic or dizygotic).

Grandparentage Test

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DNA testing for grandparents and their grandchildren to genetically confirm their biological relationship to each other.  With a DNA grandparentage test from easyDNA, you can definitively answer your questions about your genetic relationships.

Aunt & Uncle Test

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Aunt/uncle testing is a type of relationship DNA test offered by EasyDNA Ireland used to confirm the biological relationship between alleged relatives. This test seeks specifically to establish whether aunts and/or uncles are genetically related to their nieces and/or nephews.

Y Chromosome Test

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Male individuals who wish to know is they share a common father or a the same paternal blood line can get the definitive answer they need with our Y chromosome test. This test is highly accurate and very reliable and only requires oral swab samples.

X Chromosome Test

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Are you sisters who have different mothers and want to know whether you have the same dad? If this is the case, then X chromosome testing is the ideal testing test. Our test is done using oral swabs and provides very accurate results.

Genetic Reconstruction Test

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A genetic reconstruction test is designed to establish if a child is biologically related to direct blood relatives on their father’s side of the family. The test is performed when the father in question cannot be directly involved in the test and a direct father-child paternity test cannot be carried out.

Maternity Test

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A DNA maternity test is used to determine a biological relationship between a mother and a child. The test works in exactly the same way as a paternity test, and the results guarantee minimum probabilities in excess of 99.99% for inclusion of maternity, and 100% for exclusion.

FAQ’s

What do I need to know before doing a relationship test?
What do the results of a relationship test show?
What does the cost of the home paternity test include?
Can i carry out the test for immigration?

What do I need to know before doing a relationship test?

Before commencing any relationship test with your alleged blood relatives we definitely recommended have your objectives clear. We do in fact, always suggest contacting our customer support team to get advice as we may be able to suggest better and more conclusive alternatives to the DNA test you had in mind.

The following information is indispensable for us to recommend the best test:

 

      • What specifically do you want to find out?
      • Are the people available and more importantly, willing to be tested?

I would like to confirm consanguinity between siblings. What test do I need?

Sibling testing is usually done by people who wish to know whether they share the same biological mother or father (in most cases, the father is in question although we have had cases where sibling wish to know whether they share the same mother).

 

      • STR Testing (short tandem repeat testing): this test is carried out when test participants are male and female.  To maximize the accuracy of laboratory analysis, we always recommend including a sample of the know parent in a sibling test.
      • In cases where siblings are male and wish to know whether they have the same father, we suggest Y chromosome testing. This test is extremely accurate between agnate relatives as males born from the same father will have the same exact Y chromosome genetic blueprint. We do not require the mother’s sample for this test.
      • Female siblings who wish to know whether they share the same father can do an X chromosome test. If females have the same mother then we will also need her sample for a conclusive analysis. X chromosome testing between siblings from different mothers does not require a sample from the known mother.

What do the results of a relationship test show?

Unlike paternity tests, relationship DNA tests provide very different types of results depending on the test in question. Some sibling tests provide a probability of relationship and an interpretation of the results; in other words, it will show whether the siblings tested are more likely to be half siblings, full siblings or unrelated. With X chromosome and Y chromosome testing, the result is either a match or a mismatch. The same applies for MtDNA testing – if two people share the same mitochondrial DNA profile, then they must share a common blood line from their maternal side and thus, have a maternal ancestor in common. Should you have any more questions, ask us. We will be more than happy to assist you.

Can i carry out the test for immigration?

The Irish Naturalization and Immigration Services, which deals with Irish visas, citizenship and more, may require relationship DNA testing to prove the relationship between alleged relatives. EasyDNA Ireland offers relationship DNA test results that can used for immigration as proof of relationship between consanguineous relatives.

For more information about this type of DNA test we suggest going to our immigration page. Click here.

For instructions on how to collect your DNA samples, visit our sample collection guide. If you need to submit a sample other than an oral swab (cigarette ends, toothbrushes, teeth and so forth) go to our DNA forensic testing page for more information.

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