To request a DNA test for child support, you have two practical routes: apply for services through your state’s child support enforcement agency and let the agency arrange the test, or file a petition for genetic testing yourself in family court. Federal law requires every state to offer genetic testing procedures in contested paternity cases, and when the agency orders the test, federal law also requires the agency to pay for it upfront.1Office of the Law Revision Counsel. United States Code Title 42 – 666 Which route makes sense depends on whether paternity has already been legally established and on how much of the process you want to handle on your own.
Going Through the State Child Support Agency
The simplest way is through your state’s child support enforcement agency, sometimes called the IV-D agency. Every state has one, and services are open to any parent regardless of income. The federal Office of Child Support Enforcement maintains a directory if you don’t know your local office.
When you apply for child support services and paternity is uncertain, the agency can arrange for genetic testing directly.2Administration for Children and Families. Child Support Handbook Chapter 3 – Establishing Fatherhood The agency files the court papers, serves the other parent, and represents the state’s interest in establishing paternity and a support order. For most people this eliminates the need to hire an attorney or figure out the court forms alone.
The financial advantage is real. When the state agency orders genetic testing, federal law requires the agency to pay for it. If paternity is established, the state can recoup the cost from the father.1Office of the Law Revision Counsel. United States Code Title 42 – 666 Some state programs offer testing free of charge. A court-admissible paternity test typically runs $300 to $500 through a private lab, so this matters.
Filing a Petition in Family Court Yourself
If you’d rather file directly, you’ll prepare and submit paperwork to your local family court. The document is usually called a petition to establish paternity or a motion for genetic testing, depending on the jurisdiction. Blank forms are available at the courthouse clerk’s office, and many state court systems post them online for download.
The forms ask for basic identifying information: full legal names, dates of birth, and current addresses for the mother, the child, and the alleged father. You also need to state the reason for the request. In a contested case, the person requesting the test must submit a sworn statement that either alleges paternity and describes a reasonable possibility of sexual contact between the parties, or denies paternity and describes a reasonable possibility that no sexual contact occurred.1Office of the Law Revision Counsel. United States Code Title 42 – 666
File the completed forms with the court clerk. You’ll likely pay a filing fee, though many jurisdictions waive fees in child support matters. After filing, you have to formally notify the other party through service of process, usually handled by a sheriff’s deputy or a private process server. Once service is complete, the court schedules an initial hearing.
What the Test Costs and Who Pays
Court filing fees vary widely. Some courts charge nothing for paternity cases; others charge several hundred dollars. Going through the child support agency typically avoids filing fees altogether.
The DNA test itself usually runs between $300 and $500 at a private accredited lab. When the child support agency orders the test, the agency covers the cost upfront by federal mandate.1Office of the Law Revision Counsel. United States Code Title 42 – 666 When a judge orders the test, the court decides who pays. If paternity is confirmed, the father is often ordered to reimburse the testing cost. Either party can request a second test if they dispute the first result, but the person making that request must pay upfront for the retest.2Administration for Children and Families. Child Support Handbook Chapter 3 – Establishing Fatherhood
What the Testing Itself Looks Like
Once a judge or agency orders genetic testing, the case moves to sample collection. The test must be performed by a laboratory accredited by a body designated by the Secretary of Health and Human Services. In practice that means a lab accredited by the AABB, formerly the American Association of Blood Banks. Results from unaccredited labs or over-the-counter home paternity kits are not admissible in court.1Office of the Law Revision Counsel. United States Code Title 42 – 666
The collection is quick. A technician rubs a cotton swab along the inside of the cheek of the child, the mother, and the alleged father. The buccal swab is painless and just as accurate as older blood-draw methods.3Cleveland Clinic. DNA Paternity Test Everyone being tested must show government-issued identification, and the lab documents each participant’s identity through a chain-of-custody procedure. That documentation is what allows the results to hold up in court. Home kits skip this step, which is why judges reject them.
Results typically come back within a few weeks. Modern DNA paternity tests are over 99.9% accurate in confirming biological parentage.3Cleveland Clinic. DNA Paternity Test Under federal law, results showing a probability of paternity of 95% or greater create a legal presumption that the man is the father.1Office of the Law Revision Counsel. United States Code Title 42 – 666
What Happens If the Other Party Refuses
A court order for genetic testing is legally binding. Ignoring it doesn’t make the case disappear. If the alleged father fails to appear for testing or refuses to comply, the court can enter a default judgment declaring him the legal father with no genetic evidence at all.2Administration for Children and Families. Child Support Handbook Chapter 3 – Establishing Fatherhood The same applies if the alleged father is properly served with a paternity complaint and never responds.1Office of the Law Revision Counsel. United States Code Title 42 – 666
Beyond a default judgment, a judge can hold the refusing party in contempt, which carries fines and possibly jail. If you believe you are not the father, the DNA test is your best evidence. Refusing it produces the worst possible outcome.
Reading the Result
If the results confirm paternity, the court issues a formal order of parentage declaring the man the legal father. From there the case moves to setting a child support amount and, if the parties raise them, addressing custody and visitation.2Administration for Children and Families. Child Support Handbook Chapter 3 – Establishing Fatherhood
If the results exclude the man as the biological father, the court will dismiss the case if it was an initial paternity action. If he was already paying support under an existing order, a negative result does not automatically end that obligation. He must file a separate legal action to have the existing order set aside based on the new evidence. Courts handle these situations differently, and some impose strict requirements before they will modify or terminate a support order, particularly if the man acted as the child’s father for an extended period.
If You Already Signed a Voluntary Acknowledgment at the Hospital
This is a boundary case worth knowing about because it changes whether a DNA test will do you any good. Many fathers establish paternity not through a test but by signing a voluntary acknowledgment of paternity at the hospital after birth. Every state must offer this option at birthing hospitals, and hospitals must provide both parents with written and oral notice of the legal consequences before they sign.1Office of the Law Revision Counsel. United States Code Title 42 – 666
A signed acknowledgment becomes a legal finding of paternity, with the same weight as a court order. Either signatory has the right to rescind it within 60 days of signing, or before the date of any court or administrative proceeding involving the child, whichever comes first.1Office of the Law Revision Counsel. United States Code Title 42 – 666 During that window, you can take it back for any reason.
After the 60 days, the bar rises sharply. A signed acknowledgment can only be challenged in court on the basis of fraud, duress, or material mistake of fact, and the person challenging it carries the burden of proof.2Administration for Children and Families. Child Support Handbook Chapter 3 – Establishing Fatherhood Child support obligations stay in effect during the challenge unless a judge finds good cause to suspend them. If you signed at the hospital and now have doubts, the 60-day window is the single most important deadline in this process.
If You’re Trying to Reopen an Existing Support Order
A man already paying support who discovers evidence that he is not the biological father can petition the court for genetic testing, but this is a harder road than an initial paternity case. Courts are reluctant to disrupt established support orders. Some states impose strict time limits or require proof of fraud or newly discovered evidence before they will reopen the question. If you’re in this position, act quickly and consider getting legal advice before filing. The steps look similar to a fresh petition, but the standard the judge applies is not the same.