DNA Grandparent Test

Determine how likely it is that you’re the real grandparent of a child with our easy-to-use Home DNA Grandparent Test Kit. Get fast, accurate results available discreetly online within 1 to 2 business days of sample receipt – a great option when the parent in question is not available for testing.
Fast Turnaround:
1-2 business days
Sample Type:
Mouth Swabs
Use Type:
Personal Knowledge
1 grandmother, 1 grandchild
CA$195
1 grandmother, 1 grandchild
CA$195
The DNA Tests Direct DNA Grandmother Test is used to investigate whether 2 people are biologically related as grandmother and grandchild.
Order Now
1 grandfather, 1 grandchild
CA$195
1 grandfather, 1 grandchild
CA$195
The DNA Tests Direct DNA Grandfather Test is used to investigate whether 2 people are biologically related as grandfather and grandchild.
Order Now
1 grandmother, 1 grandfather, 1 grandchild
CA$290
1 grandmother, 1 grandfather, 1 grandchild
CA$290
The DNA Tests Direct DNA Grandparent Test is used to investigate whether a potential grandmother and grandfather are the true biological grandparents of a potential grandchild.
Order Now
At-Home DNA Testing

Grandparent DNA Testing

Our DNA Grandparent Test is designed specifically for situations when a parent is unavailable for testing. This specialized test determines the likelihood that a potential grandmother or grandfather is the biological grandparent of a child. Many grandparents use this test to confirm whether their son or daughter is the biological parent of their potential grandchild, especially in cases where the parent is deceased, unavailable, or unwilling to participate in testing.

Using advanced genetic analysis and our accredited Canadian laboratory, we provide reliable probability assessments of grandparent-grandchild relationships with complete privacy and discretion.

How the DNA Grandparent Test Works

Order your DNA Kit

Place your order online, and we’ll send you a DNA test kit with everything you need to collect your samples.

Collect your Samples

Follow the detailed, step-by-step instructions to collect DNA samples using the provided mouth swabs.

Lab Analysis

Use the provided return envelope to mail your DNA samples to our Canadian laboratory for analysis.

Receive Results

Download your DNA results from your online account within 1-2 business days of sample receipt at the lab.

Need a Grandparent Test for Legal Purposes in Canada?

If you require DNA paternity results intended for submission in official or legal proceedings – such as child support, custody, birth certificate changes or inheritance disputes, you will need a Legal Grandparent Test with strict chain-of-custody procedures.

Painless Mouth Swabs

Collect DNA samples easily with a simple cheek swab. It's safe for everyone, from newborns to adults.

Secure Online Results

DNA Tests Direct delivers your results online in just 1 to 2 business days from the moment our lab receives your samples.

Trusted Canadian Laboratory

Our fully accredited Canadian testing laboratory holds globally recognized accreditations including AABB, CAP, CLIA, SCC, and ISO17025, ensuring accurate results for every test.

Frequently Asked Questions

A DNA Grandparent Test determines the likelihood that an alleged grandparent is biologically related to their grandchild. This test is particularly valuable for Canadians when the connecting parent (the child of the grandparent/parent of the grandchild) is unavailable for testing due to death, absence, or unwillingness to participate. Common scenarios include establishing biological relationships for inheritance matters, immigration cases requiring proof of familial relationships, or situations where a grandparent wishes to confirm whether their child is actually the parent of their alleged grandchild.

Our DNA Grandparent Test provides a statistical likelihood rather than the definitive results of a paternity test. The test analyzes up to 27 genetic markers through dual-process testing in our accredited Canadian laboratory. Because grandchildren share approximately 25% of their DNA with each grandparent, results are presented as a Combined Kinship Index showing how likely the grandparent relationship is compared to no relationship. Including both grandparents and/or the available parent significantly improves accuracy.

If test participants live in different cities or countries, we can split the DNA test kit and ship components to separate addresses. Each kit part is individually barcoded for secure tracking, and testing begins once all samples reach our laboratory.

To request a split kit, include the following in the “Additional Information” section at checkout:

“Please send Person A’s kit to [Name, Address] and Person B’s kit to [Name, Address].”

Note: Additional shipping fees apply for multi-address orders.

For legal matters such as court proceedings, child custody, support cases, or inheritance claims, you will need to order the Legal DNA Test. This test requires a chain of custody procedure to ensure the results are admissible in court. The process includes having DNA samples collected by an impartial third party, proper identification of participants, and samples being directly sent to the testing laboratory.

Click here to learn more about legal DNA testing →

No, the DNA test kits do not have an expiration date and can be stored indefinitely before sample collection. However, once a sample is collected, it’s recommended to send the kit back to our laboratory for testing within 3 months to ensure the best results.

When a DNA Grandparentage test is performed, the autosomal STR profiles of the grandchild and alleged grandparent are obtained and compared. A statistical analysis is performed based on the match type typically expected for true grandchild/grandparent pairs and a “Combined Kinship Index” value is obtained. The value is compared against the following chart:

Combined Kinship Indexes and their verbal equivalent:
Combined Kinship Index >10000 = Practically proven
Combined Kinship Index from >1000 to 10000 = Highly likely
Combined Kinship Index from >100 to 1000 = Very likely
Combined Kinship Index from >10 to 100 = Likely
Combined Kinship Index from >1 to 10 = Slightly more likely than unlikely
Combined Kinship Index of 1 = Inconclusive
Combined Kinship Index from 0.1 to <1 = Slightly more unlikely than likely
Combined Kinship Index from 0.01 to <0.1 = Unlikely
Combined Kinship Index <0.01 = Highly unlikely

The collection process is extremely simple and painless. Your kit includes easy-to-use cheek swabs (similar to Q-tips) that you gently rub against the inside of the cheek for about 30 seconds. This collects enough DNA for testing without any blood or needles. The process works for everyone, including infants. Our kit includes clear instructions, and our customer service team is available if you need assistance.

When you activate your DNA grandparent test kit online, you will have a secure online login to check test status and download your DNA grandparent test results as soon as they are ready.

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