Sibling Testing

Full siblings, half siblings, or no siblings at all; use DNA testing to discover the possibilities.


When should I use a legal sibling test?

A DNA sibling test will test the relationship between two or more individuals to assess if they are biologically related as siblings. Sibling tests can also be used to provide reliable parentage testing when one parent is deceased or unavailable.

What type of sample is collected in a legal test?

The most common sample type is a buccal swab.  This sample is collected using a cotton swab that is gently rubbed on the inside of your cheek.  Blood samples are also acceptable.

Schedule a Test

After your order is confirmed and payment is processed, one of our representatives will follow up to schedule your specimen collection or you can select to call them instead. We have more than 1,900 Labcorp-operated facilities in the US, and contract with more than 13,000 locations globally. We will work with you to find a convenient location for sample collection. Our office is open to assist you Monday through Friday, 8am – 8pm EST.


At-home DNA tests are commonly called non-legal tests. DNA samples for at-home tests are collected by individuals in the privacy of their own home. They provide the same information as a legal DNA test, but they are not intended for use in a court of law. If there is a possibility that the results might be needed for legal purposes, a legal test should be performed.

Need Help?

Call 888-454-7173