At-Home Paternity Testing in Connecticut: A Modern Parentage Framework

Connecticut has no restrictions on at-home paternity testing. You can order a kit, collect DNA samples at home, and send them to a lab without any state-level barriers or permissions. If you need a private answer about biological paternity, the process is available to any Connecticut resident.

What makes Connecticut stand out is that the state completely overhauled its parentage laws in 2021. The Connecticut Parentage Act (Public Act 21-15), which took effect on January 1, 2022, replaced the older Chapter 815y framework and brought Connecticut into line with the most modern version of the Uniform Parentage Act. Among other things, the new law created a de facto parent provision, expanded Probate Court jurisdiction over parentage matters, and established specific rules for when the marital presumption can — and cannot — be challenged after a child reaches age two.

Below, we cover how Connecticut defines parentage, the voluntary acknowledgment process, court proceedings, and where at-home DNA testing fits into the picture.

How Connecticut Law Defines Parentage

Connecticut's parentage framework is now governed by Chapter 818 of the Connecticut General Statutes, the Connecticut Parentage Act and Parentage-Related Provisions. The law creates several presumptions of parentage under Section 46b-488:

• Marital presumption: If the person and the person who gave birth to the child were married, and the child is born during the marriage or within 300 days after the marriage ends by death, dissolution, or annulment, or after a decree of separation, the married person is presumed to be a parent.
• Cohabitation and holding out: If the person, jointly with another parent, resided in the same household with the child and openly held out the child as their own from the time the child was born or adopted and for a period of at least two years thereafter, the person is presumed to be a parent.

Connecticut uses gender-neutral language throughout its parentage statute. The law refers to "a person who gave birth" and "a person" rather than "mother" and "father." This reflects the state's modernized approach to family law, designed to cover a broader range of family structures.

A key feature of Connecticut's framework is the two-year lock-in rule for presumed parents. Under Section 46b-489, a presumption of parentage under Section 46b-488 cannot be overcome after the child reaches age two unless the court finds one of these narrow exceptions:

• The presumed parent is not a genetic parent, never resided with the child, and never held the child out as their own
• The child has more than one presumed parent (competing presumptions)
• The alleged genetic parent did not know about the potential genetic relationship due to material misrepresentation or concealment, and the alleged genetic parent files within one year of discovering the potential genetic parentage

This two-year rule means that if you have questions about biological paternity in Connecticut, the clock is running. After the child turns two, challenging an established presumption becomes significantly harder.

For a broader overview of the different ways paternity can be established, see our guide on how to establish paternity.

Voluntary Acknowledgment of Paternity in Connecticut

For unmarried parents who agree on parentage, Connecticut provides the Acknowledgment of Parentage as a way to establish legal parentage without going to court.

Under Section 46b-476, the person who gave birth and a person claiming to be the genetic parent may sign an acknowledgment of parentage. The form must be signed or otherwise authenticated under penalty of perjury, and it must include the minimum requirements specified by the U.S. Department of Health and Human Services under 45 CFR 303.5.

Before signing, both parties must receive oral and written notice about:

• The alternatives to signing the acknowledgment
• The legal consequences of signing, including that it creates a binding legal determination of parentage
• The right to rescind the acknowledgment
• The right to contest paternity, request genetic testing, and have a trial
• For the mother: information about custody, visitation, and support rights
• For the putative father: notice that signing creates financial support obligations until the child turns 18

Once filed with the Connecticut Department of Public Health, the acknowledgment takes effect on the birth of the child or the date of filing — whichever occurs later, per Section 46b-478. At that point, it carries the same legal force as a court judgment of parentage.

Connecticut hospitals are required to provide the acknowledgment forms and notices to unmarried parents at the time of birth. For more on what happens at the hospital, see our article on whether hospitals do paternity tests at birth.

Rescinding or Challenging a Paternity Acknowledgment

Connecticut follows the federal 60-day rescission window but applies strict rules after that period.

The 60-Day Rescission Period

Under Section 46b-480, either signatory may rescind the acknowledgment by filing a rescission with the Department of Public Health before the earlier of:

• 60 days after the effective date of the acknowledgment (per Section 46b-478), or
• The date of the first hearing in a court proceeding — to which the signatory is a party — to adjudicate an issue relating to the child, including a support proceeding

The rescission must be in a signed record that is attested by a notarial officer or witnessed. It is filed with the Connecticut Department of Public Health, Vital Records Section, Parentage Registry.

Challenging After the Rescission Period

Once the 60-day window closes, the acknowledgment can only be challenged in court or before a family support magistrate on the basis of fraud, duress, or material mistake of fact. The burden of proof falls on the person bringing the challenge.

Connecticut does not impose a fixed outer time limit on these challenges in the same way some states do, but the practical difficulty of proving fraud, duress, or material mistake increases with time. Courts will also consider the impact on the child when deciding whether to vacate an established parentage determination.

Connecticut's Parentage Establishment Process

When parentage is disputed and cannot be resolved voluntarily, Connecticut provides a court process to settle the question. Under the Connecticut Parentage Act, a proceeding to adjudicate parentage may be filed by:

• The child, or a representative of a minor child
• The person who gave birth to the child
• A person who is a parent under the Act
• A person seeking to be adjudicated a parent
• The Connecticut Department of Social Services
• The Department of Children and Families
• A person the court deems to have a sufficient interest
• A representative authorized to act for a deceased, incapacitated, or minor person who would otherwise be entitled to file

One distinctive feature of Connecticut's system is split jurisdiction. Both the Superior Court and the Probate Court have authority over parentage matters. Under Section 46b-571, an alleged genetic parent seeking to establish parentage files in Probate Court. This can be a simpler and less expensive process than going through Superior Court, though the scope of what the Probate Court can decide is more limited.

Connecticut also recognizes de facto parents — people who have no biological or adoptive connection to a child but who have functioned as a parent in the child's daily life. To qualify, the person must have resided with the child for at least one year, taken on full parental responsibilities without expecting financial compensation, held the child out as their own, and formed a bonded relationship with the child that was supported by the legal parent. A de facto parent can petition for legal parentage, which means biology is not the only path to legal parenthood in Connecticut.

Court-Ordered Genetic Testing in Connecticut

When parentage is at issue in a Connecticut court proceeding, genetic testing is available. Under the Connecticut Parentage Act (Sections 46b-496 through 46b-505), the court must order genetic testing if a request is supported by a sworn statement from a party alleging a reasonable possibility that the person is the child's genetic parent.

Key rules for court-ordered testing in Connecticut:

• Probability threshold: If genetic testing shows a 97% or higher probability of parentage, the evidence must be admitted and the alleged parent is presumed to be the genetic parent. Connecticut's 97% threshold is lower than the 99% standard used in many other states.
• Refusal consequences: A person who refuses to submit to court-ordered genetic testing may face a default judgment against them. That means the court can adjudicate parentage based on the refusal, effectively ruling against the person who refused testing.
• IV-D cases: In child support enforcement cases under Section 46b-168a, the IV-D agency (the Child Support Enforcement Bureau within the Department of Social Services) must order genetic testing when parentage is at issue and a party requests it. The state pays the initial cost of testing. If the alleged parent is subsequently found to be the parent, they become liable for the testing costs unless they are low-income or indigent.
• Limitations on testing: Genetic testing may not be used to challenge the parentage of a person who is a parent through assisted reproduction or surrogacy, or to establish the parentage of a gamete donor.

For a detailed breakdown of the court-ordered testing process, see our article on court-ordered paternity tests.

Connecticut Department of Social Services — Child Support Enforcement

The Connecticut Department of Social Services (DSS) operates the state's child support program through its Child Support Enforcement Bureau (CSEB), which functions as the state's IV-D agency. CSEB plays a central role in paternity establishment when child support is involved.

CSEB can:

• Establish parentage for children born to unmarried parents
• Order genetic testing when parentage is in dispute (in IV-D cases)
• Initiate judicial proceedings through family support magistrates to establish parentage
• Set up and enforce child support orders once parentage is confirmed
• Locate absent parents

In IV-D cases, the state pays the upfront cost of genetic testing. If the tested person acknowledges parentage or is adjudicated as the parent, they become liable for the testing costs — unless they are found to be low-income or otherwise unable to pay.

Connecticut also has family support magistrates who handle many parentage and support cases. These magistrates have the authority to order genetic testing, establish parentage, and enter support orders. This can be a faster track than going through the full Superior Court process.

For more on how paternity and child support are connected, see our article on paternity tests for child support.

At-Home vs. Legal Paternity Testing in Connecticut

Connecticut does not restrict at-home DNA testing. You can freely order a home test kit, collect cheek swab samples yourself, and mail them to a lab. No doctor's order is needed, and no state permission is required. This stands in contrast to New York, Connecticut's neighbor, which requires physician authorization for any DNA test.

But there's an important distinction:

At-home paternity test results are not admissible in Connecticut courts.

Home test results are considered "peace of mind" testing. They give you an accurate, private answer about biological parentage. But because there's no chain of custody — no third-party verification of who provided the samples, no witnessed collection, no tamper-evident handling — a Connecticut court won't accept them as evidence.

If you need results for a legal matter in Connecticut — child support, custody, challenging an acknowledgment, a Probate Court parentage proceeding, or a family support magistrate hearing — you'll need a legal paternity test with full chain of custody documentation.

Given Connecticut's two-year lock-in rule for presumed parents, getting answers early matters. Many Connecticut residents start with a home test to understand the biological picture before signing any legal documents or before the two-year window closes. If the home test raises questions, there's still time to pursue the legal process. If it confirms what you expected, you move forward with more certainty. We cover the differences in detail in our comparison of home vs. legal paternity testing.

How At-Home DNA Testing Works

The DNA testing process works the same way regardless of where you live:

1. Order your kit. You can order a home paternity test kit from US Diagnostics Center for $79. The kit ships to your Connecticut address and includes a prepaid return envelope for mailing your samples back.
2. Collect samples. The kit includes cheek swabs for the alleged father and the child. You rub the swab on the inside of each person's cheek for about 30 seconds. No blood, no needles, no pain.
3. Mail samples back. Seal the samples in the provided packaging and drop the prepaid envelope in the mail.
4. Lab analysis. Once the lab receives your samples, processing takes 2-3 business days. Our lab analyzes up to 28 genetic markers — well above the industry standard of 20 or more markers.
5. Get your results. Results are delivered securely online. You'll see either an inclusion (99.99% or greater probability of paternity) or an exclusion (0% probability). There's no ambiguity.

The mother's sample is not required but can strengthen the analysis. A mother's kit can be added during checkout if you want to include it. Express result options are also available during checkout for faster turnaround.

Ordering a Test in Connecticut

US Diagnostics Center ships nationwide, and Connecticut residents can order directly from our website. There are no state-level restrictions on purchasing or using an at-home DNA test kit in Connecticut. Your kit arrives in discreet packaging with everything you need to collect samples and send them back.

We are BBB Accredited with an A- rating. Our lab analyzes up to 28 genetic markers for every test, giving you a high-confidence result. If you have questions about your specific situation before ordering, our team is available through our contact page.

Frequently Asked Questions

Can I use a home paternity test as evidence in a Connecticut court?

No. Connecticut courts require chain of custody documentation for DNA evidence to be admissible. A home test doesn't include witnessed collection, identity verification, or tamper-evident sample handling. Home test results are accurate for personal knowledge, but they won't be accepted as evidence in any Connecticut legal proceeding — whether in Superior Court, Probate Court, or before a family support magistrate.

What is Connecticut's two-year rule for challenging paternity?

Under Section 46b-489, a presumption of parentage under Section 46b-488 cannot be overcome after the child reaches age two, unless the presumed parent is not a genetic parent and never resided with or held the child out as their own, there are competing presumptions, or the alleged genetic parent was misled about the potential genetic relationship and files within one year of discovery. After the child turns two, the presumption becomes very difficult to challenge.

How long do I have to rescind a paternity acknowledgment in Connecticut?

You have 60 days from the effective date of the acknowledgment (the later of the child's birth date or the date the acknowledgment was filed), or until the first court hearing in a proceeding related to the child — whichever comes first. The rescission must be notarized or witnessed and filed with the Connecticut Department of Public Health. After 60 days, the acknowledgment can only be challenged in court on the basis of fraud, duress, or material mistake of fact.

What is a de facto parent under Connecticut law?

A de facto parent is someone with no biological or adoptive connection to a child who has functioned as a parent. To qualify, the person must have resided with the child for at least one year, assumed full parental responsibilities without expecting financial compensation, held the child out as their own, and formed a bonded relationship with the child that was fostered by the legal parent. A de facto parent can petition the court for legal parentage under the Connecticut Parentage Act.

What probability threshold does Connecticut use for genetic testing?

Connecticut uses a 97% probability threshold. If genetic testing shows at least a 97% probability of parentage, the evidence must be admitted and the tested individual is presumed to be the genetic parent. This is lower than the 99% threshold many states use, meaning Connecticut's threshold for creating a genetic testing presumption kicks in earlier.

Can I file a paternity case in Probate Court in Connecticut?

Yes. Under Section 46b-571, an alleged genetic parent seeking to establish parentage can file a petition in Probate Court. This can be a simpler and less costly route than Superior Court, though the scope of what the Probate Court can address may be more limited. The Probate Court can order genetic testing and adjudicate parentage as part of these proceedings.

Related Reading

• Home Paternity Test vs. Legal Paternity Test: What Is the Difference?
• How to Establish Paternity: Every Option Explained
• Court-Ordered Paternity Test: Process, Cost, Timeline, and What to Expect
• How DNA Testing Works: A Complete Step-by-Step Guide
• What Happens If You Refuse a Paternity Test?

This article is part of our Paternity Testing: The Complete Guide guide.