“My ex-girlfriend contacted me to say that I may be the father of her 5 year old daughter. Your test proved that I am the true biological father. It’s a life changer. Thank you.”

Jared, SD

“I was very impressed with the ease and discretion of the testing process. I received my results quickly and quietly.”


“My husband has always mentioned that our two children maybe did not belong to him and accused me of being involved with his friend at the time that our children were conceived. I knew that this was not true. We finally decided to get a paternity test done to put an end to this. Sure enough, the results of the paternity test indicated greater than 99.9999% that he was the father of our children. Our family is now closer than ever before.”

R. Stern, Seattle, WA

“A++++. Near the date that my test was scheduled to be completed, I was so nervous that I ended up calling your lab almost once every hour. Thank you for putting up with me. I won’t forget your kindness.”

G. Lopez, NY, NY

DNA Grandparent Test

Select Your Test:
Pricing is all inclusive (includes all laboratory processing fees, and delivery of the reports).

Private Test


Legal Test
DNA Grandparentage Testing

The DNA grandparent test is recommended for situations where the alleged father/parent is not available for testing. The DNA grandparent test will provide the likelihood that an alleged grandmother or grandfather is the true biological grandparent of a child. This test is usually ordered by grandparents wishing to determine whether their son is the true biological father of their grandchild but their son (the alleged father) is deceased or unavailable to take the DNA paternity test.

When the Alleged Father Cannot be Tested

Whenever possible, the paternity test is always the best option because parentage testing will always provide a conclusive result. However, in situations where the alleged father is unavailable for testing (e.g. alleged father is deceased or unable to participate), the alleged father’s parents can be tested to investigate whether they are the true biological grandparents of the child. Please read the information below to understand the benefits and limitations of grandparentage testing before proceeding.


When conducting a grandparentage test, it is recommended to test both grandparents (the grandmother and the grandfather) in order to obtain the most conclusive results. If this is not possible, a grandparentage test can be conducted by testing only one grandparent.

Including the mother of the child in the grandparentage test will also help to increase the stringency of the test.

Testing the Grandmother, Grandfather, and the Grandchild

When both of the alleged father’s parents are available for testing, the laboratory will examine the genetic profile of both grandparents and then use the genetic information of the grandparents to reconstruct the genetic information of the missing alleged father. Once the alleged father’s genetic information is reconstructed, a paternity analysis will be conducted by comparing the reconstructed genetic information for the missing alleged father against the genetic information of the child.

Testing Only One Grandparent and the Grandchild

When only one grandparent is tested, the missing alleged father’s genetic information cannot be reconstructed. In such situations, the laboratory will test the single grandparent and the grandchild and then compare their genetic information. Based on the type of genetic material expressed by each individual, the number of genes which are shared, and the pattern of expression of the genetic material, the laboratory will be able to perform a statistical analysis to generate the “grandparentage index”. If the grandparentage index is less than 1.00, this indicates that it is more likely that the grandparent and grandchild are not related. However, if the grandparentage index is greater than 1.00, this indicates that it is likely that the grandparent is biologically related to the grandchild.

  • Check the status of your test online and download your test report instantly when it is ready
  • Results in 3 to 5 business days
What if the individuals to be tested live at different addresses, can you split the kit?

Yes, if the individuals to be tested live in different cities, or even different countries, we can split the kit and send each component to a different address. Since the kits are individually barcoded, the samples will still be tested together even if the are sent back separately. To order a split kit, please write the following into the comments box of the online order form “Please split kit”. Please also indicate the name and address to send each component. For example, please state “send the Alleged Grandmother’s portion to… (specify name and address)” and “send the Grandchild’s portion to… (specify name and address).

Need Help?

Let our team of Dedicated Technical Support Experts help you place an order or find the right test for you!

Call us anytime at 1-877-766-2155. Laboratory hours are 8AM to 5 PM PST, 11AM to 8PM ET, Monday to Friday (except statutory holidays).

Or you can email us at support@dnafamilycheck.com.

We want to be there for you every step of the way! If you have any questions, please do not hesitate to contact us at any time.

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