What Is a Legal DNA Collection?
A legal DNA collection — also called a chain-of-custody DNA collection — is a certified specimen collection performed by a trained collector following strict protocols that make the results admissible in court, immigration proceedings, or other official contexts. It is different from at-home DNA kits, which cannot be used in legal matters.
On Point Drug Testing performs certified buccal (cheek swab) DNA collections in San Diego County for paternity testing, immigration cases, and other legal purposes.
Common Reasons for Legal DNA Collection
- Paternity: Establishing biological parenthood for child support, custody, or personal knowledge. Court-ordered paternity tests require a legal chain-of-custody collection.
- Immigration: USCIS and National Visa Center accept DNA evidence from AABB-accredited labs to establish family relationships for certain visa petitions when documentary evidence is insufficient.
- Estate and Inheritance: Establishing biological relationships in probate matters.
- Personal Confirmation: Some families seek legal DNA testing for personal peace of mind, even without a court order.
How the Collection Works
The process is non-invasive. Our certified collector verifies the identity of each person to be tested using a government-issued photo ID. We photograph the ID for the chain-of-custody record. The collection itself involves swabbing the inside of each participant's cheek with a sterile swab — completely painless and takes less than 2 minutes per person.
All participants must be present at the same collection — the collector, the alleged father, the child (and typically the mother, depending on the lab's requirements). We coordinate scheduling to ensure everyone can be present.
Chain of Custody: Why It Matters
Chain of custody is the documented record of who collected the specimen, how it was handled, and how it was shipped to the laboratory. Without an unbroken chain of custody, results cannot be used in legal proceedings. Our collectors are trained to maintain documentation at every step, from collection through laboratory submission.
AABB Accreditation and Why It Matters
For legal DNA testing — paternity cases, immigration petitions, estate proceedings — the laboratory processing your sample must be AABB-accredited (formerly the American Association of Blood Banks). AABB accreditation means the lab follows rigorous quality standards for DNA analysis, chain of custody documentation, and result reporting. An AABB-accredited result is accepted by U.S. immigration authorities (USCIS), family courts, and federal agencies.
Non-accredited "at-home" DNA tests are not accepted in legal proceedings. They may be useful for personal knowledge, but if you need results for a court filing, an immigration petition, or a legal dispute, you need a collection performed by a trained, neutral third-party collector — not a home swab you mail in yourself.
On Point Drug Testing Services collects buccal swab specimens that are shipped to AABB-accredited partner laboratories. The chain of custody form documents every step from collection to result, making the report legally defensible.
Immigration DNA Testing: USCIS Requirements
USCIS accepts DNA test results to establish biological relationships when standard documentary evidence (birth certificates, marriage records) is unavailable or insufficient. Common use cases include petitions for immediate relatives, derivative beneficiaries, and refugee or asylee family reunification.
USCIS requires that both the petitioner (U.S. side) and the beneficiary (overseas side) be tested, with specimens collected by accredited, independent collectors in each country. The San Diego side of that collection is where On Point comes in — we collect the petitioner's buccal swab, complete the required chain of custody documentation, and ship to the AABB-accredited lab that coordinates with the overseas collector.
Contact us at 619-241-4415 to discuss your specific immigration case before booking. Bring your USCIS case number if available.
What to Bring to Your DNA Collection Appointment
For all legal DNA collections, bring a government-issued photo ID (driver's license, passport, or military ID). For minors, a parent or legal guardian must be present and provide their own ID plus documentation of legal guardianship if applicable. If your collection is for an immigration case, bring any correspondence from USCIS or your immigration attorney referencing the required test.
The collection itself takes about 10 minutes. A buccal swab — a soft cotton swab rubbed along the inside of the cheek — is the most common method. It is painless and non-invasive. Avoid eating, drinking, or smoking for 30 minutes before the collection to avoid contamination.
Booking a DNA Collection in San Diego
Call us at 619-241-4415 to discuss your specific situation. We'll ask about the purpose of the test (this helps ensure we use the correct lab and protocols), the number of participants, and we'll schedule a time that works for everyone. We offer both mobile visits and our office location depending on your preference.