fastdna.Testing

    Family relationships

    Your connections matter.
    Let science bring clarity.

    Explore the relationships that make your family story unique. A specialist can help choose the most informative test for the relatives available.

    Confidential guidance. Real human support.

    UNDERSTAND A SIBLING CONNECTION

    Siblingship DNA testing

    When a direct parent-child comparison isn’t available, a sibling test can help you explore a possible connection with care and context.

    • Assessment of full-sibling or half-sibling relationships
    • Personal-use or documented legal collection options
    • A specialist explains which relatives may strengthen the analysis

    Sample collection

    Cheek swabs from the possible siblings; additional relatives may help

    Expected turnaround

    Confirm the timeline for your family configuration

    Results express statistical support for a relationship, not always a definitive yes or no. Discuss limitations and the benefit of additional relatives before ordering.

    Nationwide reach. Local convenience.

    Your next step is closer than you think.

    Find a convenient collection location near you.

    3,000+

    collection locations across the U.S.

    Find a lab near me

    Good questions. Honest answers.

    A little clarity
    goes a long way.

    Not sure where to start? You’re not alone. Here are answers to the questions we hear most.

    Rather talk to a real person?

    (440) 290-9786

    (440) 290-9786 Order test kit