To get a paternity DNA test when the father is in jail, you ask a court to order genetic testing, and the correctional facility is required to allow a technician to collect a cheek swab from him inside. The process runs the same way it does for anyone else, with some extra coordination between the court, the facility, and the testing lab. You can start through your state or local child support enforcement agency, or by filing a paternity petition through a private attorney. The father can also initiate the case himself from inside.
Two Ways to Open the Case
The first route is your state or local child support enforcement agency. Every state has one, and they handle these cases routinely. The agency manages paperwork, coordinates DNA testing, and works directly with the correctional facility. If you’re receiving public assistance, the agency typically handles everything at no cost to you. If you’re not, the agency can still arrange the testing and charge only the actual cost of the test, which it can later recoup from the father if paternity is confirmed.1Office of Child Support Enforcement. Essentials for Attorneys Chapter Nine – Establishment of Parentage
The second route is hiring a family law attorney. You get more control over timing and strategy, but you pay legal fees. This makes sense when the case involves contested custody, complicated circumstances, or when you want someone advocating for you at every step.
One thing that surprises people: the father can file too. An incarcerated man who believes he is the father has the legal right to file a paternity petition himself. Most courts allow inmates to request fee waivers for filing costs, and many court systems offer standardized paternity petition forms for self-represented litigants.
If the Father Agrees, You May Not Need a DNA Test
If the incarcerated father doesn’t dispute that he’s the parent, you can skip genetic testing. Both parents sign a Voluntary Acknowledgment of Paternity, which once filed carries the same legal force as a court order establishing paternity. Both parents must first be told the legal consequences of signing, including what it means to waive genetic testing.
Federal law gives either parent 60 days to rescind the acknowledgment, or until a court or administrative proceeding involving the child begins, whichever comes first.2Office of the Law Revision Counsel. United States Code Title 42 – Section 666 After that window closes, the acknowledgment can only be challenged by proving fraud, duress, or a material mistake of fact, and the burden falls on whoever is challenging it. Child support obligations stay in place during the challenge unless a judge suspends them for good cause.
Getting the form signed inside a facility means coordinating with the administrative office. The form must be notarized, and most jails and prisons have notary services available to inmates. If the father is willing but scheduling keeps stalling, the child support agency or your attorney can push the coordination through.
Locating the Father and Filing the Petition
If the father won’t sign, you file a petition to establish paternity. To do that, you need to know where he’s housed and his inmate identification number, because the court needs that information to formally serve him.
For federal prisoners, the Bureau of Prisons runs a free online inmate locator that covers everyone in federal custody from 1982 to the present.3Federal Bureau of Prisons. Inmate Locator You can search by name or by inmate number. Nearly every state’s department of corrections runs a similar public search tool. County jails typically maintain their own rosters, often searchable through the sheriff’s office website. If you can’t find the person through these databases, the child support agency has additional tools to locate someone.
The petition asks the court to determine the child’s legal father. You’ll need full legal names and dates of birth for the mother, the child, and the alleged father, plus the facility name and inmate number. Filing fees vary, and most courts offer fee waivers for people who can’t afford them.
Serving Legal Papers Inside a Facility
Once you file, the alleged father has to be formally served with a copy of the petition. Serving an inmate follows a slightly different process, but facilities handle it regularly.
The standard approach is to mail the documents to the records office or intake unit at the facility, along with a blank affidavit of service and a stamped return envelope. A designated staff member delivers the papers to the inmate and completes the affidavit confirming service. That affidavit gets mailed back and filed with the court as proof of notice. In some jurisdictions, a sheriff’s deputy or professional process server delivers the papers to the facility in person, and facility staff handles the final hand-off.
Cost depends on local rules. Some facilities provide service at no charge; others charge a small fee for the sheriff or process server. If the child support agency is handling your case, service is part of what they do.
How the DNA Sample Gets Collected
After the petition is served and the father contests paternity, the court issues an order for genetic testing. Federal law requires states to order testing in any contested paternity case when either party makes a sworn request.2Office of the Law Revision Counsel. United States Code Title 42 – Section 666 The court sends a copy of the testing order directly to the correctional facility’s administration, which authorizes and schedules the collection.
The test itself is simple. A trained technician visits the facility and collects a buccal swab by rubbing a soft swab along the inside of the father’s cheek. The whole thing takes a few minutes. What matters more than the swab is the chain of custody. The technician verifies the inmate’s identity, seals and labels the sample in front of him, and logs every transfer. The mother and child provide their samples separately at an approved collection site outside the facility.
All samples go to an accredited laboratory. Courts require that testing be performed by a lab approved by a recognized accreditation body for the results to be admissible.1Office of Child Support Enforcement. Essentials for Attorneys Chapter Nine – Establishment of Parentage AABB, formerly the American Association of Blood Banks, runs the primary accreditation program for relationship testing in the United States.
What If He Refuses the Test
A court order for testing isn’t optional. When an incarcerated father refuses to provide a sample, the court has several tools to keep the case moving.
The most common outcome is that the court draws an adverse inference from the refusal, treating it as evidence that the man knows he is the father. Many courts will then enter a default judgment of paternity based on that inference and whatever other evidence exists. The court can also hold him in contempt. Since he’s already incarcerated, contempt more commonly takes the form of fines or unfavorable rulings than additional jail time, but judges have broad discretion.
Refusing the test doesn’t make the case go away. It usually makes the outcome worse for the person refusing, because the court proceeds without the one piece of evidence that could have excluded him.
Reading the Results
The lab compares genetic markers from the child, the mother, and the alleged father to calculate a probability of paternity. Federal law requires each state to set a threshold above which the results create a legal presumption of paternity.2Office of the Law Revision Counsel. United States Code Title 42 – Section 666 Most states set it at 99% or higher, and in practice a positive result almost always shows a probability at or above that level. A result excluding the man is definitive.
The lab sends its results to the court, which distributes them to both parties. Either party can request additional testing, but the person asking has to pay for the second round upfront.2Office of the Law Revision Counsel. United States Code Title 42 – Section 666 If the results confirm paternity and no successful challenge is raised, the court enters a formal order. That order establishes the legal parent-child relationship and opens the door to child support, custody, visitation, inheritance, and benefit eligibility, including Social Security.
Who Pays for the Test
A court-admissible paternity test typically runs $400 to $500. Who pays depends on how the case was opened and how it comes out.
When a child support enforcement agency manages the case, the agency covers the cost upfront. If paternity is established, the agency can seek reimbursement from the father.2Office of the Law Revision Counsel. United States Code Title 42 – Section 666 For families not receiving public assistance, the agency can charge a reasonable fee, but that fee cannot exceed the actual lab cost.1Office of Child Support Enforcement. Essentials for Attorneys Chapter Nine – Establishment of Parentage
In privately filed cases, the parties usually pay testing fees upfront. The judge has discretion over the final allocation of costs and may consider each party’s income. A father confirmed by testing may be ordered to reimburse the mother or the state. If the test excludes him, the financial burden often shifts to the person who filed. None of this is automatic; judges weigh each case on its facts.
How the Father Participates in Hearings
An incarcerated father has the right to participate in the proceedings even though he can’t physically appear in the courtroom. Most courts accommodate this through telephone or video conferencing, arranged in advance between the court and the facility.
Set this up early. Courts generally need advance notice to arrange remote testimony from a facility, and facilities have limited scheduling windows for legal calls. If you’re filing, flag the father’s incarceration in your initial petition so the court can plan accordingly. If the father is filing, he should notify both the court and his facility’s legal services coordinator as soon as a hearing is scheduled.
What Happens With Child Support
Once paternity is established, a child support order can follow immediately. The father’s current income, which in prison is typically near zero, affects what the court orders.
One of the biggest mistakes either parent makes is assuming child support pauses automatically during incarceration. It does not. A support order stays in effect until a judge modifies it, and unpaid amounts accrue as debt, called arrears, that the father will owe on release. Federal regulations now prohibit states from treating incarceration as “voluntary unemployment” when setting or modifying support, so a jailed parent cannot be penalized with a higher obligation based on the theory that they chose not to work.4Office of Child Support Enforcement. Final Rule – Modification for Incarcerated Parents States are also barred from treating incarceration itself as a legal bar to requesting a modification.
When a child support agency learns that a noncustodial parent will be incarcerated for more than 180 days, the agency must either initiate a review of the order or notify both parents of their right to request one.4Office of Child Support Enforcement. Final Rule – Modification for Incarcerated Parents This is where families lose ground. If nobody requests a modification, the original order keeps running and the debt keeps growing. For a father facing a long sentence, filing for a modification right after the order is entered can prevent tens of thousands of dollars in uncollectible arrears from piling up. For the custodial parent, a lower monthly amount now can improve the odds of actually collecting something after release.