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A sibling DNA test is one of the relationship testing services offered by homeDNAdirect Ireland. Siblings DNA testing is the most accurate way of knowing whether you and your brother or sisters have one biological parent or both biological parents in common. Our sibling test is offered starting at just €299. This cost is inclusive of our home sample collection kit, the results and the analysis. Testing price is for testing of 2 individuals.
A grandparentage DNA test will determine whether a biological relationship exists between grandparents and their grandchild. This type of test is often done instead of a DNA paternity test. If the untested, alleged father is not the child’s biological father both paternal grandparents will be excluded as their grandchild’s biological relatives.
The avuncular DNA test is done to determine whether there is a relationship between a niece or nephew and his or her alleged aunt or uncles. The test will indicate the probability of relationship between the people tested. The lab cannot perform this test if the aunt / uncle is NOT a full sibling to the alleged father in question.
Do you need to establish the paternity of a child but are unable to carry out a paternity test? In such cases, a genetic reconstruction test is a great way of establishing paternity without the need to directly include the father’s DNA sample.
A maternity DNA test is the single definitive means of determining whether an alleged mother is the biological mother of a child. In much the same way as paternity DNA test, a maternity DNA test will provide an inclusion rate of 99.99% if the tested mother is the biological mother of the child. The test will exclude maternity with a probability of 100%.
Our mitochondrial DNA test is used to determine whether two or more people share the same maternal line. The cost of the MtDNA mitochondrial DNA test is €329 and includes the testing of 2 people. The turn-around time is 14-16 business days starting from the day your samples are received at the laboratory.
Twin Zygosity DNA testing will determine if twins are identical (monozygotic) or fraternal (dizygotic). homeDNAdirect Ireland provides you with a result that is 100% accurate.
If you wish to determine whether two or more alleged, male relatives share the same paternal line you can do so by doing a Y chromosomes test. A DNA test can confirm whether males tested share the same Y chromosome profile. You can order Y-chromosome test for two males at the cost of €299. Results are ready in 5-7 working days from the receipt of samples at the laboratory.
The X chromosome test is a DNA test done between females who suspect they share the same biological father. If the alleged sisters do not have the same mother, then it is possible to carry out the X chromosome test with just their own DNA samples. The X chromosome test from homeDNAdirect Ireland can be purchased starting at €399 for two females to be tested. Results will be available in 15 working days.
Why carry out a relationship test?
Generally, relationship DNA testing is a means of establishing paternity in cases where the father is not available and therefore, a straightforward paternity test is not an option. In such cases a grandparentage test or an avuncular DNA test can substitute a paternity DNA test. Siblings may also do a sibling DNA test, which will establish the extent of the sibling relationship: half siblings, full siblings or not siblings. The below are the relationship DNA tests we offer. This said, no relationship test will provide the same conclusive results that can be given in a home paternity test.
What will the results of a relationship test tell me?
This is not a clear-cut question with a single answer as different tests will give you different answers and not all tests are equally accurate. Some tests might just give you a probability of relationship and others might give you a definite yes you are related result. Again, for more information and details about any of our DNA tests, you can contact our team who will give you all the information you need.
How do I go about deciding on the type of test to carry out?
When you look through our range of relationship testing services, you will probably immediately know which one you require as soon as you skim the first sentence. However, we can give you 2 basic questions to help you decide on your test:
- What do you want to establish?
- Who is available for testing?
What you wish to establish refers to what you hope to find out with the DNA test result. Have a clear question in mind, for example “I want to know if this woman is my biological grandmother” or “I want to find out if my brother and I share the same father”. This will help decide if you need a siblings DNA test, avuncular test etc.
Who is available for testing is crucial and an often overlooked factor when deciding on a relationship test. You may want to know whether you and your brother share the same father but is your brother