Legal Paternity Testing in Chantilly, VA
Court-admissible from the first swab — every collection follows strict chain-of-custody and is processed at an AABB-accredited lab, so the result holds up for court, child support, and USCIS. Because all participants must be ID-verified and collected together, paternity cases are scheduled by phone. Results in 3 to 5 business days.
Legal paternity test
Chain-of-custody collection with a signed lab affidavit.
- Legal paternity
- $369
- Results in
- 3–5 business days
- Required
- All adults present photo ID. Custodial parent consents for minors.
When you need it
What legal paternity testing is for
If a court, government agency, or attorney is involved, a peace-of-mind home test is not enough. Legal paternity testing follows strict chain-of-custody so the result can be entered as evidence.
Court & child support
The leading reason Fairfax-area families request legal paternity testing. Our signed lab affidavit is built to satisfy court evidentiary standards.
Custody disputes
Establish or disprove biological relationship in family-court proceedings. Confirm with your attorney that legal (not at-home) testing is required.
Immigration cases
Chain-of-custody collection for our AABB-accredited laboratory partner, accepted by USCIS and US embassies. Results are shipped directly to the requesting authority.
Estate & inheritance
Establish biological relationship for inheritance or probate matters when documentary evidence is insufficient.
Chain-of-custody
What happens at every legal DNA collection
The procedural rigor is what separates a legal test from a peace-of-mind home kit. Here is the exact process we follow every time.
Schedule the appointment
All required participants — alleged father, child, and (optionally) mother — must be present together or at coordinated appointments. Call us at 571-500-7030 to schedule.
Identity verification
Each adult presents government-issued photo ID. The custodial parent consents on behalf of minor children. We document identity in front of you and record the chain-of-custody form.
Cheek-swab collection
A trained collector swabs the inside of each participant’s cheek for about 60 seconds. The samples are sealed and packaged in your presence, then shipped under tracked custody to our AABB-accredited reference lab.
Lab analysis & signed affidavit
The lab processes samples on the same timeline as a peace-of-mind test — typically 3 to 5 business days after receipt. Results are reported with a signed laboratory affidavit suitable for court submission.
DNA tests we offer
Every DNA test we run in Chantilly
Click any test for current pricing, sample requirements, and turnaround.
Legal (Court-Admissible) Paternity Test
Strict chain-of-custody for court-admissible paternity results.
Immigration DNA Test
DNA testing through our AABB-accredited lab partner, accepted by USCIS and US embassies.
Grandparent DNA Test
Useful when the alleged father is unavailable — establishes a likely biological link through grandparent DNA.
Siblingship DNA Test
Determine the probability of a full or half-sibling relationship.
Maternity DNA Test
Confirms a biological mother-child relationship with cheek-swab samples.
FAQ
Legal paternity questions, answered
Common questions about court-admissible DNA testing. Don’t see yours? Call us at 571-500-7030.
What makes a paternity test "legal" or court-admissible?
A legal paternity test follows strict chain-of-custody — each participant presents government-issued photo ID, the collection is performed in our office by a trained collector, samples are sealed and tracked, and results are reported with a signed affidavit. Home-collected paternity tests cannot be used in court because identity cannot be verified.
Who needs to be present for a legal paternity test?
At minimum, the alleged father and the child must each provide a cheek-swab sample in our office. Including the mother strengthens the statistical result but is not strictly required. All adults present must show photo ID. For minor children, the custodial parent must consent.
How long do legal paternity test results take?
Results are typically ready in 3 to 5 business days after the lab receives all samples. The lab processes legal tests on the same timeline as peace-of-mind tests — the difference is procedural (chain-of-custody, ID verification, signed affidavit), not technical.
Is your DNA testing accepted by USCIS for immigration cases?
Yes. Our laboratory partner is AABB-accredited, and immigration DNA samples are collected under chain-of-custody and shipped directly to USCIS or the requesting US embassy. We do not release immigration results to the patient.
How much does a legal paternity test cost in Chantilly, VA?
See the test detail page for current pricing. Legal paternity is more expensive than peace-of-mind paternity because of the chain-of-custody procedures, ID verification, and signed affidavit. Both follow the same science.
Can the test be used for child support or custody court cases?
Yes — that is the most common reason clients in Fairfax County order a legal paternity test. The signed lab affidavit and chain-of-custody documentation are built to meet court evidentiary standards. Your attorney can confirm the specific requirements for your case.
Before you walk in
DNA testing — what people ask before booking
Quick, plain-English answers to the questions Chantilly neighbors ask most often before booking.
How much does a paternity test cost in Chantilly, VA?
Peace-of-mind paternity is $199. Legal (court-admissible) is $369. Immigration DNA is $549.
Read the guideLegal paternity test vs at-home paternity test — what is the difference?
Same science, different procedure. Legal tests use chain-of-custody and are court-admissible. Home tests are for personal knowledge only.
Read the guideImmigration DNA testing in Chantilly: what USCIS accepts
Immigration DNA testing is $549 — AABB-accredited, chain-of-custody, with results sent directly to USCIS or the embassy.
Read the guideService area
Legal DNA testing near you
From our Chantilly lab near Westfields, we serve Centreville, Fairfax, Herndon, and the wider Fairfax County area.
Need court-admissible DNA testing?
Call to coordinate appointments so all required participants can be collected together.