Relationship Tests

Relationship testing can be used to confirm whether alleged relatives are really biological related. We can carry out testing between grandparents and grandchildren, brothers and sisters and other relatives. Begin getting the answers you need today.

From $699

Siblings DNA Test

Do you share one biological parent, or both biological parents? Or perhaps none? EasyDNA offers sibling DNA testing services to help siblings discover whether individuals tested are full siblings, half siblings or no siblings at all.

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From $259

Twins DNA Test

Twin zygosity test – Why do this test?

Whilst classification of the twins as being either fraternal or identical is often done on the basis of the similarity of facial features, this is indeed an unreliable and flawed method. EasyDNA offers twins DNA testing with precise and clear results which will tell you whether the twins tested are fraternal (dizygotic) or identical (monozygotic). Once the required samples are sent to our laboratories and tested, we will issues results which will highlight the DNA profiles; if the profiles are the same, the twins are identical. However, a non-identical profile means that twins are not identical but rather full siblings. The price of the Twin Test is $259 NZD.

From our experience most tests are requested for curiosity purposes either by the parents or the actual twins themselves to have scientific certainty of their status. However, this information can also serve other purposes particularly in cases which involve medical interventions since understanding whether you are a twin or not can influence decisions such as organ donation and bone marrow transplants

The tests are reliable and provide results which are 99.99% accurate. Reliability is further enhanced by the analysis of 16 genetic markers. Standard return of results is between 5 and 7 business days.

Note: We can only guarantee standard result turnaround time when testing takes place solely using oral swab samples. Using a discreet sample for your test may lead to an increase in turnaround time.

 Twins DNA Test – Sample Collection

Collection of samples for twins DNA test is a simple and easy procedure you can do in the comfort of your own home. Our DNA collection kit contains all the necessary tools you need to collect the required samples. Inside the kit you will find instructions as to how to collect the DNA samples, swabs, consent forms and a self-addressed envelope for the return of samples. Click here to read more about DNA sample collection.

Real client testimonial:

“Everyone always asked whether my girls were identical. I always said no, and used to get the reply back, “are you sure”. Now i have my answer. Thank you very much.”  Australia, 22nd April 2015

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From $949

Grandparentage Test

Grandparentage DNA testing can be used when grandparents need to confirm the biological relationship to their grandchild. This test will show the statistical probability that the grandparents are genetically related to their grandchild.

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From $699

Aunt & Uncle Test

The aunt-uncle DNA test (or avuncular test) will determine whether a genetic relationship exists between aunts and/or uncles and their niece and/or nephew. Avuncular test results will show you a probability of relationship between tested parties.

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From $699

Y Chromosome Test

A Y chromosome test (Y-STR test) is used to determine if males tested share the same paternal lineage. The test is highly accurate and results are provided in just 7 working days from the receipt of samples at our laboratory.

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From $425

Maternity Test

A DNA maternity test is used to determine a biological relationship between an alleged mother and a child. The test works in the exact same way as the DNA paternity test and the results guarantee minimum probabilities in excess of 99.99%+ for inclusion of maternity, and 100% for exclusion.

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From $259

Twins DNA Test

EasyDNA offers an accurate twins DNA test which will establish whether twins are identical or fraternal. Our test is 100% accurate and results are ready in 5-7 working days.

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  • There are many relationship tests available and deciding which test is most suited can be difficult. But this is where our customer support team come in – we are here to guide you and provide you with the test most suited to your individual case. Just call us and we will discuss your case. Keep in mind the following:

    1. What exactly do you need to find out?
    2. Who is available for the relationship test?
    3. Are they willing to take part in the test?
  • The DNA sibling test can be used when alleged siblings wish to determine whether they are full siblings, half siblings or unrelated. In cases where siblings want to know whether they are half or full siblings, the sample of a known parent is not required. However, when testing for half siblings, or unrelated siblings, the inclusion of the sample of a known parent (normally the mother) is recommended to strengthen the results of the test.

    The following options are also available depending on the sex of the people being  tested:

    • Do a Y chromosome test if siblings are male and want to determine whether they share the same father. This test will clearly establish male lineage. For more information on this test visit our Y chromosome testing page.
    • An X chromosome test is used if siblings are female, have different mothers and want to know if they share the same father. Visit our X chromosome testing page for further information.
    • A MtDNA test  (Mitochondrial DNA test) can be used if siblings are male and female and want to determine maternal lineage. Visit our MtDNA testing page for more information.
  • Not all relationship tests have the same turnaround time. Some tests take long than others. Most of our relationship testing services, including grandparentage, aunt/uncle and Y chromosome testing have a turnaround time of 5- 7 working days. X chromosome testing and mitochondrial DNA testing have longer turnaround times.

  • Relationship DNA testing samples can be collected with our kit – whenever possible we suggest using this kit. Inside your kit you will find oral swabs, consent forms and instructions. If you cannot collect samples using oral swabs, for example if a relative is not available for the test, you can send us a forensic sample such as hairs, nails, toothbrushes or garments.

If you have difficulty deciding which DNA Testing service you require then Contact Us directly.