Paternal lineage
Explore whether two males share a paternal family line.
DNA Testing
Y-STR DNA Testing
Compare two males to explore whether they share a common paternal lineage.
Informational $325 · Legal $399 · Confidential
Testing options
Choose your test
Y-STR
Who is tested: Two or more males provide cheek swabs. Participants should be connected through the paternal line being explored.
Standard results: 3 to 5 business days. Expedited results (+$100): 1 to 2 business days. These times are for regular DNA tests, not Immigration DNA. Choose expedited in your cart.
Understanding your options
What y-str dna testing is
Y-STR testing examines markers passed through the paternal line and can help evaluate whether males may share that lineage.
It does not identify the exact relationship by itself, so we review the question and participants before collection.
Reasons for testing
Why people choose this test
Genealogy questions
Add DNA information to family-history research.
Unavailable relatives
Consider a paternal-line comparison when closer relatives cannot test.
Professional collection
Use documented collection appropriate to the requested purpose.
Participants and samples
Who needs to be tested
Two or more males provide cheek swabs.
Participants should be connected through the paternal line being explored.
What to expect
How it works
- 1
Reach out
Tell us what you hope to learn and whether the results are for personal or official use.
- 2
Schedule collection
We confirm the right test, participants, documents, and a convenient appointment time.
- 3
Collection appointment
Samples are collected carefully and identities are documented when chain of custody is required.
- 4
Laboratory analysis
The collected samples are securely prepared for DNA analysis.
- 5
Confidential results
Results are delivered privately, and our team can answer process-related questions.
Appointment preparation
What to bring
Do not eat, drink, smoke, or chew gum 1 hour before your appointment.
For a legal case, each adult should bring a valid government-issued photo ID.
Bring the child's birth certificate or identification when applicable, with a parent or legal guardian present for minors.
Informational testing generally requires less documentation than legal chain-of-custody testing.
Bring any court, agency, or case paperwork connected with the request.
We'll confirm exactly what you need when we schedule.
FAQ
Common questions about y-str
It is DNA testing designed to help answer a specific y-str dna testing question through comparison of the appropriate participants or samples.
Two or more males connected through the possible paternal line are tested.
Most standard collections use a painless cheek swab.
Many cases offer both. Legal or court-admissible testing requires identity verification and documented chain of custody.
Standard results: 3 to 5 business days. Expedited results (+$100): 1 to 2 business days. These times are for regular DNA tests, not Immigration DNA. Timing starts once all required samples and information are received.
Yes. Case information and results are handled privately and shared with authorized recipients.