Relationship DNA Testing

Validity Genetics offers discrete and convenient Relationship DNA testing from the comfort of your own home.

Have you ever wondered if you are actually related to other members of your family? 

Validity Genetics relationship tests can determine if you are related to grandparents, aunts, or uncles on either side of your family.

Get Your Test Results in Three Easy Steps!

  • Step 1: Order Your DNA test!

Order your DNA test like you would any other product online.  Fill in your name, email, shipping address, and purchase with a Visa, MasterCard or any Credit card you wish to use.  Your paternity test will be mailed to you in a nondescript package to ensure your privacy.

  • Step 2: Follow the Simple Directions at Home!

The easy to use kit will contain everything you need and the enclosed directions will walk you through the quick and simple DNA collection process.  Make sure to fill in the paperwork in full, sign the consent form, and label as directed.

  • Step 3: Return the Prepaid Envelope to Our Laboratory!

It's as easy as that!  Once we receive your test kit we will have your DNA test results ready and emailed to you in about 48 hours!

What is this test for?

A grandparent relationship DNA test can be carried out to find the true nature of a relationship between child and grandparents. 

This test is also call a 'Missing Parent' test as it is especially useful when the alleged mother or father is unavailable for paternity/maternity testing but the alleged grandparents are open to being tested.

How do grandparentage tests work?

Our grandparent DNA tests will determine whether a biological relationship exists between an individual and their alleged grandparent(s). 

A DNA test for grandparent(s) includes producing a DNA profile for everyone involved in the test. The tests are useful because there is a known percentage of genetic material that is passed down from each grandparent.

A child inherits 50% of his or her genetic profile from both the mother and father. The mother and father of the child, in turn, would also have inherited 50% of their genetic profile from their parents. Therefore, any child is likely to share 25% of his or her DNA profile with each grandparent. 

When one or both parents are unavailable for a DNA test, grandparents of the missing individual may be tested to determine if they contributed any DNA to the child’s genetic profile.

How accurate is the grandparent DNA test?

It should be noted that grandparent DNA testing is not as accurate as a maternity or paternity analysis. 

At times, the genetic markers shared between the individuals tested may be particularly common within the overall population. A grandparent DNA test should only be performed when it is impossible to perform a paternity or maternity test directly. 

Click here to learn more about more accurate maternity and paternity testing.

For most accurate grandparent testing, it’s important to use samples of both grandparents.

Testing only a single grandparent will likely provide inconclusive results. In addition, when doing a grandparent DNA test, it is highly recommended to also test and take into account the available parent’s DNA sample (mother/father, if possible). 

Grandparent/Missing Parent Home DNA Test


Avuncular DNA Testing

How does Avuncular (aunt and uncle) DNA testing work?

Avuncular tests determine the probability of relationship between a child and an aunt or uncle.

According to the standard testing procedure, our easy-to-use home kit provides mouth swabs to collect a sample in the form of cheek cells. As many participants can take part as they wish: aunts, uncles, nieces, and nephews are able to participate in this type of test.

Avuncular DNA testing is based on the fact that a child inherits exactly half of its genes from father and half of the genes from the mother. Further, the biological parents share approximately half of their genes with their full siblings.

Therefore, the child will also have about half of its paternal genes in common with the father’s full siblings and similarly, half of the maternal genes with the mother’s full siblings. 

What will the avuncular test results look like?

When you receive your results, an avuncular index will be calculated from the DNA analysis. This will tell you the likelihood that an alleged aunt or uncle is related to the child biologically versus being unrelated.

Results are calculated using probability measures. A result greater than 80% points to the fact that a biological relationship exists, whereas a result less than 20% indicates no biological relationship exists with the missing parent.

How can I ensure the most accurate relationship DNA test results?

Like all relationship DNA testing, it helps to include the available parent’s DNA. 

This is especially true when testing for maternal and paternal relationships and when the biological mother or father is missing or unable to be tested. 

The present parent’s DNA sample will help eliminate those genes which were inherited from the available parent, allowing the lab to isolate the remaining DNA and ensure more accurate results.

Home Avuncular (Aunt/Uncle) DNA Test



DNA test results in as little as two days!