Siblingship DNA Test
Determine whether two individuals are full siblings, half-siblings, or unrelated — using precise DNA comparison across 21+ genetic markers.
all collection, admin & lab fees included
Determines whether two people are full siblings, half-siblings, or unrelated.
- Price
- $320 · all fees included
- Results
- 3–5 business days
- Court-admissible
- Optional (chain-of-custody available)
- Availability
- Mobile across Maryland · same or next-day
What Is a Siblingship DNA Test?
A siblingship DNA test compares the genetic profiles of two individuals to calculate the statistical likelihood that they share one biological parent (half-siblings) or two biological parents (full siblings), versus being unrelated. Because siblings inherit DNA randomly from their parents, siblingship tests are most accurate when one or both parents can also be tested. Without parental samples the results are still statistically significant, but the confidence level may be lower than a direct parent-child test. The independent accredited laboratory clearly states the type of sibling relationship in the report.
How It Works
Who Is This Test For?
- Adults seeking to confirm a biological sibling connection
- Families reconnecting after adoption, separation, or long estrangement
- Estate and inheritance cases requiring proof of biological sibling status
- Immigration petitions involving sibling relationships
- Individuals whose parents are unavailable for direct paternity testing
What to Bring / How to Prepare
- ✓Valid government-issued photo ID for both individuals being tested
- ✓Including a known biological parent (particularly the mother) dramatically increases accuracy — bring them if possible
- ✓Payment method — pricing varies by number of participants
- ✓Minor participants must be accompanied by a legal guardian
- ✓Contact SafeTouch in advance if one of the siblings is unavailable to appear in person
Turnaround Time & Results
Results typically in 3–5 business days from laboratory receipt of samples.
Ready to Get Started?
Book your appointment online or speak with a SafeTouch team member about your specific situation. We'll walk you through every step and answer any questions.
Frequently Asked Questions
Do we need to test one or both parents too?
What does the siblingship index number mean?
Can the test tell the difference between full and half siblings?
What if the test results are inconclusive?
Cancellation Policy
Cancellations must be made at least 48 hours in advance to reschedule without a fee. Cancellations or reschedules made within 48 hours of the appointment are subject to a rescheduling fee. No-shows (no call, no appearance) require rebooking before a new appointment can be confirmed. We do not offer refunds on completed tests or services. Please call us at (410) 881-7444 as soon as possible if you need to reschedule.
Book This Test
Same-day and next-day appointments often available. Mobile collection throughout Maryland.
Book Appointment →Get a Quote (410) 881-7444Results typically in 3–5 business days from laboratory receipt of samples.
- Adults seeking to confirm a biological sibling connection
- Families reconnecting after adoption, separation, or long estrangement
- Estate and inheritance cases requiring proof of biological sibling status
- Immigration petitions involving sibling relationships
- Individuals whose parents are unavailable for direct paternity testing