Service detail
Sibling DNA test
Type
Personal & Legal
Turnaround time
3–5 business days
Price
From $175
Our sibling DNA test determines whether two individuals share one or both biological parents. Ideal for adoption reunions, inheritance claims, and personal curiosity.
What is a sibling DNA test?
A sibling test compares the DNA of two individuals to determine whether they share one biological parent (half siblings) or both (full siblings).
Common use cases
Reconnecting with biological siblings after adoption
Inheritance and estate disputes
Immigration applications
Personal curiosity about biological family
Test variations
Full vs Half Sibling Test: Determines whether two people share one or both parents
Same Father Test: Confirms whether two individuals share the same biological father
Same Mother Test: Confirms whether two individuals share the same biological mother
How it works
Order your kit
Collect buccal swabs from both individuals
Return samples in the prepaid envelope
Receive results in 3–5 business days
Accuracy
Sibling tests provide a statistical probability index. Results above 1.00 indicate a biological relationship is likely; results below 1.00 indicate it is unlikely.
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