DNA testing & collection
Sibling DNA Testing
Determine whether two individuals are full siblings, half siblings, or unrelated when a parent is unavailable.
In-office · Allen, TX
$299
24-hour advance booking. Confirmed only after successful payment.
Mobile collection · DFW
Starting at +$50
Additional to the test price. Extended travel quoted separately. Same-day or later: subject to availability and owner approval; no payment now.
Non-legal tests are for personal knowledge, not court use. Legal tests use verified identity and documented chain of custody to support court use when applicable requirements are met.
About this collection
- Full sibling and half sibling analysis
- Helpful for estate, benefit, and family history questions
- Legal or informational options available
Direct office and mobile collections serve Allen and DFW. Outside DFW, LegacyLink coordinates testing through Universal Forensics and partner affiliate collection facilities; those collections are performed by the partner facility.
Legal testing includes identity verification and documented chain of custody. Laboratory analysis is performed by our laboratory partner; LegacyLink is an independent collection and coordination company, not an AABB-accredited laboratory. Check the requirements of your court or agency before ordering.