Legally defensible relationship DNA testing
At Lextox, we work with a quality assured Ministry of Justice and ISO 17025 accredited partner laboratory to provide a range of relationship DNA testing. Our services include paternity, maternity, prenatal, avuncular and more.
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Why Lextox?
Types of DNA tests
A paternity DNA test resolves doubts relating to the paternity of a child. The test works by comparing the DNA profile of a child with the profiles of their mother and alleged father. If the mother is unavailable for testing, we can usually perform a motherless paternity test.
A maternity DNA test is used to determine whether a woman is the biological mother of a child.
Like a paternity test, the maternity test works by comparing the DNA profile of a child, the alleged mother and, when available, the child’s father.
Our prenatal DNA test is an accurate and non-invasive way to determine paternity prior to a child’s birth and means that care plans can be put in place ahead of the birth.
A mouth swab is required from the alleged father and a blood sample from the biological mother’s arm. After profiling the mother and foetus, we are able to compare the markers against the alleged father’s DNA.
The mother must be at least eight weeks pregnant as per confirmation from a medical professional and testing is unable to be undertaken on multiple pregnancies (i.e. twins and triplets).
A sibling DNA test verifies whether two alleged siblings are full or half siblings.
A grandparent DNA test can determine whether a child is biologically related to the alleged grandparents. A grandparentage test is based on the fact that a child inherits half of his or her genetic profile from each biological parent.
When one of a child’s parents is unavailable for testing, we can look to the grandparents to determine whether they contributed DNA to the child’s genetic profile works by comparing the DNA profile of a child with the profiles of their mother and alleged father. If the mother is unavailable for testing, we can usually perform a motherless paternity test.
An avuncular DNA test is taken to determine if a child is the biological niece or nephew of the alleged aunt or uncle. The avuncular test is a viable option when the alleged father or mother is unavailable for testing and the only available relative is a brother or sister of the alleged father or mother
Important to note
Cases that involve in-direct relationship testing, including avuncular, single grandparentage and siblingship, will only provide a statistical likelihood that gives evidence to support the tested relationship. A test of this nature will not directly exclude the relationship. The test only gives the odds of the relationship based on the claimed relationship and the systems tested.
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