Family law

My son died and I was ordered to take a DNA test. Will I owe child support for his child?

Quick answer

When a man dies before a child is born or before paternity is confirmed, courts can order his parents or siblings to take a DNA test so the child's legal father can be established. That order almost never makes the grandparent responsible for child support.

Researched by Dan Martin, Legal Researcher · Published by Onbello Legal · Last updated June 2026

Why a court orders a grandparent DNA test

Paternity is normally proven by testing the father directly. When the father has died, labs can compare the child's DNA to the DNA of his biological parents or siblings instead. A grandparent test can show with high confidence whether the deceased man was the child's father, which is why a court or a child support agency may order one.

The test is usually requested for the child's benefit. Establishing a legal father can qualify the child for Social Security survivor benefits based on the father's work record, give the child inheritance rights from the father's estate, and place the father's name on the birth certificate. The child's other parent, a child support agency, or the estate may be the one asking for it.

Child support is a parent's obligation, not a grandparent's

In every state, the duty to support a child belongs to the child's legal parents. A grandparent is not a parent and is not ordered to pay ongoing child support simply because the DNA test confirms the relationship. A positive result makes the deceased man the legal father. It does not transfer his support duty to his parents.

The narrow exceptions do not usually apply here. A few states can hold grandparents responsible when the parent is a minor still living at home, and a grandparent who voluntarily takes legal guardianship or custody of a child takes on a duty to support that child. Neither situation is created by taking a DNA test for an adult son who has passed away.

What a positive result can affect

The result may matter for the estate. If the son left assets, life insurance, or a retirement account, a confirmed child may have a claim as an heir or beneficiary. In some states a support claim can be made against the estate of a deceased parent, but that is a claim against the estate's assets, not against the grandparent personally.

The result can also open a door the other way. Once the relationship is legally established, grandparents in many states have a path to request court-ordered visitation with the grandchild if the custodial parent will not allow contact. That is a separate case with its own standards, and the rules vary a lot by state.

Practical steps after receiving the order

Read the order carefully to see who requested the test, which court or agency issued it, and what the result will be used for. Most orders say exactly that on the first page. If the paperwork came from a child support agency, call the number on the notice and ask what the agency intends to do with the result. Agencies pursue parents, and the deceased parent's case will typically close or be converted to a survivor benefits referral.

Comply with the test rather than ignoring the order, since ignoring a court order can lead to penalties while taking the test usually costs nothing but a cheek swab. If anything in the paperwork names you as a party being asked to pay money, that is the point to consult a family law attorney in your state before responding.

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Where to check this

Forms, deadlines, and local rules change. Verify anything on this page against the official self-help resources for your state before you rely on it.

This page is general legal information, not legal advice, and does not create an attorney–client relationship. Laws and local rules vary and change. For advice about your situation, consult a licensed family-law attorney in your state.