Serving Elizabeth, Plainfield, Linden & all of Union County, NJ Same-day appointments · Call (877) 856-9553
Paternity Test NJ

Sibling, Grandparent & Aunt/Uncle DNA Testing in NJ

When the alleged father is not available, these tests confirm a biological relationship through other family members.

Sometimes the alleged father cannot be tested because he is unavailable, unwilling, or has passed away. Relationship DNA tests answer the parentage question through grandparents, siblings, or aunts and uncles instead.

Image: relationship-dna-test-nj.jpg
alt text: “Extended family taking a sibling and grandparent DNA test in New Jersey”
Relationship tests use close family members when a parent cannot be tested.

The tests we offer

  • Sibling DNA test. Confirms whether two people share one or both biological parents.
  • Grandparent DNA test. Uses one or both of the father's parents to establish a relationship to the child.
  • Aunt or uncle (avuncular) test. Uses the father's sibling when neither he nor his parents are available.

How to get the most accurate result

Including the child's known biological mother strengthens every relationship test, because the lab can separate her contribution from the child's DNA. We always recommend it when she is available, though it is not required.

Legal or peace of mind

Like our other tests, relationship testing is available as a private result or as a legal, court-admissible one collected under chain of custody.

Pricing

$575 $525 sale price

Relationship DNA testing is $575, on sale now for $525. The price depends on how many people are tested. Use code DNA2026 at checkout for an additional 10% off. Call for an exact quote.

Questions & Answers

Common questions

Which relationship test should I choose? +

It depends on who is available. Grandparent tests are strongest, followed by sibling and avuncular tests. We will help you pick based on who can be tested.

Should the mother be included? +

Whenever possible, yes. Her sample makes the result clearer, though the test can be done without her.

Can these be used in court? +

Yes, when you choose the legal option collected under chain of custody.

How accurate are they? +

Relationship tests give a probability rather than a simple yes or no. Including more known relatives raises the confidence of the result.

Find answers through family

Book a sibling, grandparent, or aunt/uncle DNA test in Union County.

Book a Test