Grandparent DNA Test

Will confirm the biological relationship between grandparents and a grandchild and can be used to establish paternity when the alleged father is not available. Only £249

Only £249 with results in 5-7 working days

Our Grandparent DNA Test will help establish the genetic relationship between a grandchild and his or her grandparents. We offer grandparent DNA testing using the DNA samples from the grandmother, grandfather and the grandchild.

AffinityDNA DNA Helix Icon Grandparent DNA Test

More information About the Grandparent DNA Test

Most Grandparent DNA tests are used as an alternative to paternity testing when the alleged father (or mother) is not available for testing. It is based on the laws of genetic inheritance: a child inherits 50% of their genes from their mother and 50% from their father and will share 25% of their genetic makeup with their grandparents. Alleged paternal grandparent(s) share the genes that the child inherited from his or her biological father. If a DNA test shows the child shares common genes with his or her paternal grandparents, then this indicates that the child’s untested father is the biological father of the child. A grandparent DNA test can give very accurate results but for the highest levels of accuracy we recommend testing the DNA of the alleged father and that of the child in a DNA Paternity Test.

AffinityDNA DNA Helix Icon Grandparent DNA Test

Testing Both Grandparents

In practice it is possible to only test one grandparent but we strongly discourage this as it may lead to an inconclusive result*. Testing DNA samples from both grandparents provides the most accurate results possible because we are able to:

  • Establish the probability of relationship between grandfather and grandchild and grandmother and grandchild
  • Recreate the DNA profile of the untested, alleged father (the grandchild’s father) and compare this profile to that of the child

AffinityDNA DNA Helix Icon Grandparent DNA Test

*IMPORTANT: Testing Only One Grandparent

When we have DNA samples from both grandparents we are able to combine certain DNA markers from both of them to reconstruct the DNA of the missing and untested parent (the parent of the grandchild). If we have a DNA sample for only one grandparent, we are unable to do this and will only able to provide you with a probability of the relationship between grandparent and grandchild. This probability of relationship can sometimes be low despite an actual biological relationship existing. If you wish to carry out a single Grandparent DNA Test, please Contact Us so we can discuss alternative tests if appropriate.

AffinityDNA DNA Helix Icon Grandparent DNA Test

Grandfather-Grandson DNA Testing (Between Males Only)

Males have one hereditary advantage when it comes to DNA testing – The Y chromosome which is passed on more or less unchanged from father to son, which means that all males from the same paternal line will have a carbon copy of each other’s Y chromosome. If grandfather and grandson wish to establish whether they are truly biologically related and share a common paternal line, a Y Chromosome Test is an extremely accurate test, providing the best possible option for testing in this scenario. It is even more accurate than a grandparent test as it provides a yes-or-no answer instead of a percentage of probability.

AffinityDNA DNA Helix Icon

Collecting DNA Samples

Simple, quick and painless is what we keep in mind what it comes to sample collection. All our peace of mind DNA tests are performed using a home sample collection kit. Our clients can collect their own samples without any professional help using our kit which contains:

  • Sterile mouth swabs
  • Step-by-step instructions
  • Consent forms
  • A pre-addressed reply envelope

Click her to read our online, step-by-step guide: How to Collect DNA Samples.

Dog Allergy Test Kit Review
We had our dog allergy tested with you last year. We were advised that it is not a good enough test by our vet and many others online. This however couldn't be more wrong. We used the results to remove foods from her diet and even hypo-allergenic shampoos etc. Since she turned 1 years old we had her allergy tested by blood at the vet to see if she had out grown any of these allergies. The results were exactly the same as we were given by yourselves. Everything in red she is still allergic to. Without your help I'm not sure how we would of been able to help her in her first year. Especially given that she is allergic to almost everything hypoallergenic.
September 2021
Paternity Test Kits Review
Thank you so much for your help with this. A very professional and caring service. Reminds me how very different customer services are in UK compared to the service accepted by most people here in Spain. Thanks again.
June 2021
Dog Allergy Testing Review
Please forward my praise to your superiors with regards to your customer attention - thank you for all the communication at all times, and making sure all OK. Much appreciated. 1 day into eliminating salmon oil from her diet (daily supplement I was giving her for for her arthritis) and the turkey menus she is considerably better, all in 24 hrs. Can’t wait to see how she improves within a few weeks of elimination.
April 2021
Paternity DNA Test Kit Review
You guys have honestly just kick started my life!! I’m buzzing
March 2021
Prenatal Paternity Test Review
Thank you so much for the great service and fast results
March 2021
Sibling DNA Test Kit Review
Again, thank you so much, the journey with Affinity DNA has been fast, efficient and the technical help amazing from beginning to the end.
March 2021
Degenerative Myelopathy Test Review
Amazing very fast delivery and so much detailed information!
January 2021
Father and Daughter Paternity Test Kit
I am over the moon with the service, thank you very very much.
November 2020
Health and Fitness DNA Test Review
Many thanks for your support and the excellent service provided by your company.
September 2020
DM Test for Dogs Review
Just a note to say thank you again for sending results in the post, which I received today. Your service & kindness is exemplary.
August 2020
Father and Son Paternity Test Kit
Thank you so so much mark for your fast response with the results. You have absolutely made my families life with this.
July 2020
Father Son Paternity Test Review
Thank you for our results I must say the communication and service were outstanding.
July 2020
Paternity Test for Father and Child Review
Thank you a great result I was hoping to be the father great service at a great price.
June 2020
Paternity Test Kit Feedback
Thank you so much for a speedy and comprehensive service. I am very pleased and impressed
June 2020
2 Children Paternity Test Kit Review
Thank you for the test results and a quick professional service.
May 2020
Affinity Paternity Test Review
I wish to say "big thanks" to you (and all who work with you) for your really exemplary communication and professional relationship with me.
April 2020
Parentage DNA Test Review
Thankyou so much for this service. It is a massive relief for me to have the doubt of parentage removed. It has changed my world Thankyou.
February 2020
DNA Paternity Tests Review
Thank you so much Mark, roller coaster of emotions but absolutely buzzing I’ve finally got what I wanted after 3 year of knowing. Really appreciate your work and will definitely recommend your services to other people who need ur service. Regards One happy dad
January 2020
Home Paternity DNA Test Review
Thankyou so much!! The resulting wanted, you have been brilliant throughout, will always recommend you.
January 2020
Home Paternity Test Kit Review
Thank you so much, honestly changed mine and my families life. Happy Christmas you just made mine 🙂
December 2019