Social Security & Estate Claims
When a father has passed away, testing his parents can document the biological link a child needs for survivor benefits, inheritance, or an estate claim.
99.99%+ Accurate · Confidential · Results in 3-5 Days
Grandparent DNA Test
A grandparent DNA test establishes the biological link between a child and one or both grandparents when the alleged father is unavailable (deceased, absent, incarcerated, or unwilling to test). TestMark DNA makes it simple: order an at-home kit online, or test at one of 2,297+ certified locations. Painless cheek swab, confidential results in 3 to 5 business days.
Free consultation. No obligation. Speak with a real person now at (866) 702-7644.
Ready to start? Order your kit now.
Order Your Grandparent Test OnlineOrder and pay securely online in minutes.
AABB-Accredited Labs
99.99%+ Accuracy
Confidential Results
Results in 3-5 Days
Discreet
Certified Network
Results in 3-5 Days
Confidential
2,297+
Certified Collection Sites
50
States Covered
99.99%
Accurate Results
When Is Grandparent Testing Needed?
A grandparent test is the most common way to answer questions of parentage when the alleged father cannot test directly. These are the situations where families turn to it most often.
Father Unavailable to Test
If the alleged father is absent, incarcerated, or unwilling to participate, his parents can stand in as a proven alternative to a direct paternity test.
Immigration Petitions
Document a grandparent-grandchild relationship for an immigration petition when the parent in question is not available to provide a sample.
Adding Lineage & Family Peace of Mind
Confirm a father’s side of the family for the record, or simply give grandparents and grandchildren the certainty of a confirmed biological bond.
Get a clear answer for your family
Order an at-home kit, or call and we will set up every participant at a convenient location.
Call for a Free Consultation - (866) 702-7644Prefer to order online?
Order Your Grandparent Test OnlineHow it works
Call for a free consultation
Our team walks you through the right test, answers your questions, and confirms your nearest location.
(866) 702-7644Visit your local collection site
Collect samples at home with the painless cheek swab in your kit, or visit one of 2,297+ certified collection sites. Participants do not need to be in the same place, which helps when grandparents and grandchildren live in different states.
Get results in 3 to 5 business days
Receive your confidential results delivered securely. Over 99.99% accurate, private, and legally defensible.
Call for a free consultation
Our team walks you through the right test, answers your questions, and confirms your nearest location.
(866) 702-7644Visit your local collection site
Collect samples at home with the painless cheek swab in your kit, or visit one of 2,297+ certified collection sites. Participants do not need to be in the same place, which helps when grandparents and grandchildren live in different states.
Get results in 3 to 5 business days
Receive your confidential results delivered securely. Over 99.99% accurate, private, and legally defensible.
Legal vs Personal DNA Testing
LEGAL
Legal DNA Test
- Court-admissible results
- Chain-of-custody documentation
- Government ID required at collection
- Results accepted in legal proceedings
- Collected at certified site only
PERSONAL
Personal DNA Test
- For personal knowledge only
- No chain of custody required
- No ID required
- Results not for legal use
- Can collect samples at home
Both options available - call to confirm which is right for your situation.
Not sure which test you need? Call for a Free Consultation - (866) 702-7644Pricing & Free Consultation
Grandparent testing is priced by test type and number of participants. Legal tests cost more than personal tests because they include chain-of-custody documentation. There are no hidden fees, and we confirm your exact price before you book, at no cost. DNA testing is not covered by health insurance.
No Hidden Fees
We quote your full price up front during the free consultation. No surprises.
Free, No-Obligation Call
There is no charge to call, ask questions, or get pricing. You only pay if you decide to test.
Order Online in Minutes
Prefer not to call? Order and pay securely online whenever you are ready.
Frequently Asked Questions
What is a grandparent DNA test?
A grandparent DNA test establishes the biological relationship between a child and one or both grandparents. It is used as an indirect way to confirm parentage when the alleged father is unavailable to test directly. The AABB-accredited laboratory analyzes a minimum of 20 STR markers shared between the grandparents and grandchild to calculate the probability of the relationship.
Should I test one grandparent or both?
Testing both grandparents from the same side yields the most conclusive result. Together their samples reconstruct the missing parent’s expected DNA profile, producing results that approach the accuracy of a direct paternity test. A single grandparent can still be tested and often gives useful results, but the conclusion is usually less definitive.
Does the child’s known parent need to participate?
Including the child’s known biological parent (usually the mother) is strongly recommended. Her sample lets the laboratory identify which of the child’s markers came from her, isolating the markers that must have come from the paternal side. This further strengthens the accuracy and conclusiveness of the result.
How accurate is grandparent DNA testing?
When both grandparents on the same side participate, results can exceed 99.99% probability of the relationship, comparable to a direct paternity test. The laboratory analyzes a minimum of 20 STR markers and reports the grandparentage probability. Adding the known biological parent improves the result further.
How are samples collected and how long do results take?
A trained collector (or you, with an at-home kit) gently swabs the inside of each cheek for a few seconds. It is painless and works for participants of any age, including infants. Samples go to an AABB-accredited laboratory, and results are typically ready within 3 to 5 business days after the final sample arrives.
How much does a grandparent DNA test cost?
Cost depends on the test type and number of participants, with no hidden fees, and it is not covered by health insurance. Call (866) 702-7644 for a free consultation and we will give you exact pricing before you book.
Get your grandparent test started today
Accurate, confidential, results in 3 to 5 business days.
Call for a Free Consultation - (866) 702-7644Prefer to order online?
Order Your Grandparent Test Online