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Grandparent DNA Test

AlphaBiolabs.ie » Grandparent DNA Test

Grandparent DNA Testing

A standard Grandparent test includes samples from both alleged Grandparents and alleged Grandchild and mother if available.

How Many Grandmothers to be Tested?

The standard option tests the Grandmother/Grandfather and one child. If you need to add more please use this section.

How Many Alleged Grandfathers to be Tested?

How Many Grandchildren To Be Tested?

Main Test Subject Name

Please tell us the name of the main person who will be tested.

Additional Reporting

Do you require any additional reports for this case?

password *

Please add a password. You will need this password to access your report/case details


Do you require your results next working day? We can provide your paternity test results next working day.


Product Description

Grandparent DNA tests can be used to establish a biological relationship between an individual and one or both of their alleged grandparents.

A DNA profile for each individual is produced and the DNA markers are compared; biologically-related individuals tend to have more DNA in common than unrelated individuals.

Statistical analysis is performed taking into consideration the number of matches observed between the tested individuals and the frequency of the observed marker within the relevant population. The calculations performed result in a probability of relatedness:

  • SUPPORTIVE: A result of 90–99% provides very strong evidence that a grandparent/grandchild relationship does exist
  • NOT-SUPPORTIVE: A result of 0–10% is not supportive of a grandparent/grandchild relationship
  • INCONCLUSIVE: Results falling within the 10–99% range are deemed to be inconclusive because it is not possible to determine conclusively if a biological relationship exists between the tested individuals

An inconclusive result could be due to a low number of matching DNA markers shared between the tested individuals. Alternatively, the markers that are shared between the tested parties could be extremely common within the relevant population.

Grandparent analysis is not as conclusive as paternity or maternity analysis and should be used when it is not possible to perform other types of testing.


You have two main options when choosing a Grandparent DNA Test:

  • Testing for peace of mind, which produces results that can resolve family relationship questions but cannot be used for legal purposes
  • Legal testing, which produces legally defensible results that are useful for such matters as family law disputes and immigration


If you opt for a Peace of Mind test, we will send you a free sample collection kit. You and the other parties to be tested will collect your own samples following the simple instructions provided. Please note that Peace of Mind test results are not legally defensible.


If you opt for a legal test, your DNA samples will be collected by a neutral third party such as a doctor, a nurse or one of our representatives. This third-party collection is an important element of the chain of custody process, which will ensure that your test results are legally defensible.


Our customer service department is open 8.30 am to 5.30 pm, Monday to Friday. Call our free phone number 01 402 9466 to speak to one of our experts. Outside these hours, please leave a voice message on our answer phone and your call will be returned as soon as possible. Alternatively, you can email us at info@alphabiolabs.ie