DNA Grandparent Test

The DNA Grandparent Test is used to determine the likelihood of potential grandparents being the biological grandparents of a grandchild. The test can be taken by the grandmother, the grandfather, or both grandparents together.
  • Results delivered in 1 to 2 business days
  • Each DNA test is conducted twice for 100% accuracy
  • AABB, ISO/IEC 17025 & CAP-CLIA accredited laboratory


AABB, ISO17025 & CLIA accredited lab​

About the Test

The DNA Grandparent Test offers a powerful means of uncovering the truth about familial relationships, especially when the alleged father is unavailable for testing. Grandmothers, grandfathers, or both can take the test to investigate the likelihood that they are the biological grandparents of a grandchild. There is no age limit, so the test can be done on infants and adult grandchildren alike.

When the parent in question is available, a paternity or maternity test is recommended over the grandparent DNA test. However, when the alleged parents are missing or deceased, testing the grandparents becomes invaluable for exploring potential grandparent-grandchild biological relationships.

The test is conducted in Genetrack’s lab, which is internationally accredited to the highest standards of quality and accuracy by AABB, ISO17025, and CLIA. Each test comes with a comprehensive genetic report.

Technical Info

The grandparent DNA test starts by collecting buccal (mouth) swab samples from the grandparents and grandchild. These swabs gather cells containing each individual’s unique DNA. In the lab, DNA is extracted from the cells and specific regions are amplified via PCR (polymerase chain reaction) for analysis. The grandparent’s DNA pattern is then compared to the grandchild’s pattern.

A statistical analysis calculates the likelihood of a biological grandparent-grandchild relationship based on the genetic markers shared between them. This produces a “grandparentage index” – the higher the index value above 1.0, the more likely the grandparent and grandchild are biologically related. An index below 1.0 indicates a lower probability of a biological relationship.

How Home DNA Testing Works

Step 1. Order Kit

Order Test Kit

From relationship tests to health tests, we offer a wide range of DNA tests to fit your needs.

Step 2. Swab

Collect & Ship

Collect your DNA with our painless mouth swabs, then send the samples to our laboratory for analysis

Step 4. Results

Receive Results

Access your confidential results online the moment testing is completed. Our team of experts is available for any questions.

Secure Digital Results

Track the status of your DNA test in real-time, from the moment your sample arrives at our lab to when your results are ready. Access your confidential results securely, at any time, from any device.


Here are the answers to the most frequently asked questions about this test.

This test is ideal for individuals who want to investigate a biological grandparent-grandchild relationship, especially in cases where the alleged parent is not available for testing. It can provide peace of mind or be used as part of genealogical research.

If the participants live in different cities, you can split the kit and send the components to each party for sample collection. Each component has a barcode to ensure the samples are tested together when they arrive at the laboratory. Even if the samples are collected separately, they will still be tested together once they arrive at the laboratory.

Yes, either the grandmother, the grandfather, or both can take the DNA Grandparent Test. In fact, having both grandparents participate can often provide a more complete genetic picture and increase the accuracy of the results.

No, there is no age limit for DNA testing. The test can be performed on individuals of any age, from infants to adults. The DNA sample is collected using a simple and painless cheek swab, making it suitable for people of all ages.

Once the lab receives your DNA samples, you can expect to receive your results within 1-2 business days. The results will be available online, providing a convenient and confidential way to access the information.

Yes, your personal information and test results are handled with the utmost confidentiality. Genetrack adheres to strict privacy policies and industry standards to ensure your information is secure. Your results will only be accessible to you through a secure online portal.

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