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DNA relationship testing

DNA testing is legally defensible and provides irrefutable proof of parenthood, meaning your cases can move towards a resolution.

In family law and child custody disputes, DNA testing can be used to prove, beyond doubt, paternity, maternity, and any other family relations, from siblings, grandparents, aunt and uncles.

Types of DNA testing


Prior to the collection, the donor should be mindful to not use any products like hairspray, gel, oils etc.

The collection technician will need to take two samples of hair from the crown of the head. These will generally be around the width of a pencil and cut with scissors, not shaved.

If there is little or no scalp hair, our collection technician can take a body hair sample. The sample sites will vary depending on what we are testing. For alcohol analysis, a sample can be taken from the chest or the leg/forearm. For drug analysis, hair can be taken from the underarm, chest, legs, arms, or beard.


Maternity testing can conclusively determine whether a woman is the biological mother of a child. Positive tests can prove maternity with 99.99% accuracy.

Like a paternity test, a maternity test works by comparing the DNA profiles of a child, an alleged mother and, when available, the child’s father. (A fatherless maternity test can be performed when the child’s father is not available for testing).

The genetic profiles of a biologically related mother and child will show predictable patterns of DNA inheritance.


A prenatal DNA test is an accurate and non-invasive way to determine paternity prior to a child’s birth. Once results are obtained, custody and care plans can be put in place ahead of the baby’s arrival..

A mouth swab is required from the alleged father and a blood sample is required from the arm of the biological mother. After profiling the mother and foetus, markers are compared against the alleged father’s DNA.

The test analyses free-floating foetal DNA from the mother’s plasma and compares it to the mother’s DNA profile. Once the foetus’ profile is determined, it is then compared to the alleged father to determine paternity.

The mother must be at least 8 weeks pregnant as per confirmation from a medical professional and testing is unable to be undertaken on multiple pregnancies (i.e. twins and triplets).

Testing options for when the alleged father is not available.


Siblingship testing can help two alleged siblings verify whether they are siblings. Full siblings have the same mother and father.

A sibling DNA test is often performed when an alleged father is unavailable for a paternity test and his possible children would like to know if they have the same father.


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.


A legal aunt-uncle 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

For more information on the collection process and our services, please fill in this quick form. One of our experts will get back to you ASAP.