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.
WHICH GRANDPARENT DNA TEST IS RIGHT FOR ME?
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
PEACE OF MIND DNA GRANDPARENT TESTING
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.
LEGAL DNA GRANDPARENT TESTING
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.
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