← DNA & Paternity · DNA Relationship
Legal Test🧬 Grandparent⚖️ Court-Admissible

Legal Grandparentage Test

A court-admissible test between a grandparent and grandchild to confirm a biological relationship. Collected under witnessed chain-of-custody. Results usually 2–5 business days after the lab receives the samples.

$ 399 covers both people’s collections, the lab work, and the court-admissible report.

$ 399.00All-in price
1Tests included

A grandparent DNA test compares the DNA of a grandparent and grandchild to confirm (or rule out) a direct biological relationship. It's often used to establish a family link for inheritance, benefits, immigration or birth certificate purposes, or simply to answer a question about how two people are connected. Collected under chain-of-custody, the signed result is admissible in court.

Included Tests

Legal Grandparent DNA Analysis
Compares the DNA of a grandparent and grandchild across a wide panel of genetic markers to determine the probability of a direct biological relationship. Collected under documented chain-of-custody so the result is court-admissible.
GrandparentGrandchild21+ genetic (STR) markers
incl.in panel

What This Panel Measures

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Probability of relationship. Reports how likely it is that the tested grandparent and grandchild are biologically related, expressed as a combined relationship index and percentage.
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Confirms a direct link. Establishes the grandparent-grandchild connection for legal, immigration or personal purposes.
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Legal admissibility. Witnessed collection and a documented chain-of-custody make the signed result acceptable to courts and government agencies.
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Stronger with more relatives. Adding the second grandparent or a known parent, when possible, sharpens the certainty of the result.

Who Should Get This Panel

  • You need to establish a grandparent-grandchild relationship for immigration or citizenship
  • You're supporting a claim for inheritance, benefits or a birth certificate
  • The parent linking the two generations is unavailable, deceased or unwilling to test
  • You want a legally admissible result and both people can be collected under chain-of-custody
  • You want peace of mind about a biological family connection

Conditions Screened

Confirms grandparent-grandchild relationshipCourt-admissible proof of relationship

Related Symptoms

ImmigrationInheritanceBenefits claimFamily certainty

When to Get Tested

Whenever you need to confirm or rule out a direct grandparent-grandchild link (commonly when the connecting parent can't be tested). The result is strongest when the second grandparent or a known parent is also included. If the result may be used in court or for immigration, choose the chain-of-custody collection.

Understanding Your Results

Results post to your secure online account, usually 2–5 business days after the lab receives both samples. Because a grandparent shares roughly a quarter of a grandchild's DNA, the answer is reported as a probability and combined relationship index rather than a simple yes/no: a high index strongly supports the biological link, while a low one makes it unlikely. Adding more relatives gives the clearest answer.

Frequently Asked Questions

Can these results be used in court or for immigration?
Yes. This is a legal test collected under a documented chain-of-custody (identities are verified and samples handled by neutral staff), so the signed result is admissible for immigration petitions, inheritance, benefits and other legal matters.
How accurate is a grandparent test?
It's a reliable, well-established method, though it reports a probability rather than the near-absolute 99.99% of a direct parent-child test, because grandparents share less DNA with a grandchild. Including a second grandparent or a known parent strengthens the result.
How does the collection work?
The grandparent and grandchild each provide a quick, painless cheek swab at a test center, where each person's ID is verified. Participants can be collected separately, and adding another relative improves certainty.
Is this billed to insurance?
No. You pay directly here, and nothing is billed to insurance. Your results go only to your secure account.

Pairs Well With: Same Blood Draw

Grandparentage DNA Test
Uses one or both grandparents together to reconstruct paternity when the father is unavailable.
+ Add
Legal Avuncular DNA Test
Confirms an aunt/uncle relationship as another route to the paternal line.
+ Add
$ 399.00
✓ The price you see is the price you pay. No draw fees. No physician fees. No surprise bills. $ 399.00 is all-in.
Comparing prices? Some self-pay labs advertise a low number, then add ~$28 in "lab & physician fees" at checkout. We don't. What you see here is the whole cost.
⚡ We send your lab order electronically to the test center in 2–3 minutes. Nothing to print, nothing to bring. Just walk in and sign in.
📍 Can you get tested nearby?

Test centers don’t accept payment. You pay securely here; the lab just does the draw.
⚡ Results 2–5 business days after the sample is received🧪 1 tests

What happens after you order?

  • 1Your lab order form & test code appear in your secure online account, with your test center’s address.
  • 2We send your lab requisition to the test center electronically.
  • 3Walk in & get tested. Tests usually take 5 minutes or less.
📞 Need support? (866) 873-0879
$ 399.00all-in · no extra fees