Sibling DNA Test

If a potential father is unavailable for DNA testing, you can establish paternity through a sibling DNA test. Our Sibling DNA Test can confirm whether children share the same father or mother, or both. This test can also verify relationships suggested by ancestry testing, providing clarity and peace of mind. Contact us for a free consultation—our knowledgeable customer support team is here to assist you!

Sibling DNA Test
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Sibling DNA Testing Options

GameDay DNA provides two types of sibling DNA tests: legal and at-home.

Sibling DNA Test

Legal Sibling DNA Tests

For court-admissible results, this option requires that all DNA samples be collected at a certified facility, such as a hospital, medical office, or health department. A sample collector will verify the identities of all tested individuals using government-issued ID or other legal documents to ensure the proper chain of custody is maintained.

Sibling DNA Test

At-Home Sibling DNA Tests

If you don't need court-admissible results, an at-home sibling DNA test may be the right choice for you. At-home testing offers the same level of accuracy as legal tests, as the DDC lab follows the same rigorous procedures. The key difference is that sample collection happens at home and is not witnessed.

Trusted Sibling DNA Testing

Get tested with GameDay DNA, in collaboration with world-renowned DDC, for sibling DNA testing you can trust implicitly:

  • Industry-Leading Accreditations: Our US-based laboratory holds AABB, CAP, and CLIA certifications, ensuring the highest standards of accuracy and reliability.

  • Rapid, Reliable Results: Receive your results within 5 business days of sample arrival at our state-of-the-art facility.

  • Expert Analysis: Our team of PhD-level geneticists meticulously review every test, guaranteeing unmatched accuracy.

  • Advanced Technology: Utilizing Next Generation Sequencing (NGS) for 99.99% accuracy in relationship determination.

  • Comprehensive Support: Our certified genetic counselors guide you through every step, from sample collection to result interpretation.

How the Sibling DNA Testing Process Works

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    Initial Consultation with Support

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    Scheduling & Financial Considerations

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    DNA Sample Collection Procedure

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    Result Delivery & Interpretation

Sibling DNA Test

Experts in Sibling DNA Testing

GameDay DNA performs thousands of relationship tests each year, including:

  1. Grandparent DNA Test

  2. Maternity DNA Test

  3. Avuncular (Aunt/Uncle) DNA Test

  4. Twin DNA Test

Frequently Asked Questions About Sibling DNA Tests

  • Our advanced Next Generation Sequencing (NGS) technology analyzes over 2,000 genetic markers to determine the degree of genetic similarity. The test can distinguish between full siblings (who share both parents) and half-siblings (who share one parent).

    Our PhD-level geneticists interpret the results, providing a detailed analysis of the likely relationship.

  • Yes. While ancestry tests provide broad genetic heritage information, our sibling DNA tests offer a more focused analysis of genetic relationships.

  • Sibling tests are highly accurate but slightly less definitive than paternity tests due to the nature of genetic inheritance.

    Our sibling tests typically provide a probability of relationship exceeding 99% for full siblings and 95% for half-siblings. In comparison, our paternity tests offer 99.99% accuracy.

  • Yes, our legal sibling DNA tests are court-admissible. These tests follow strict chain-of-custody procedures and are analyzed in our AABB-accredited, CAP-certified laboratory. They can be used in various legal situations, including inheritance claims, immigration cases, and custody matters.

  • Our sibling DNA test pricing starts at $499. We offer both legal and non-legal options, with the legal tests being slightly more expensive due to the additional documentation and witnessed collection required.

    We also provide flexible payment plans to make testing accessible. Contact our team for a detailed quote based on your specific needs.

  • Our results report provides a clear probability of the tested relationship. For example:

    • High probability (typically >90%): Strong evidence of a sibling relationship

    • Low probability (<10%): Evidence against a sibling relationship

    • Inconclusive (10-90%): Additional testing may be recommended

Schedule an Appointment

Call our relationship testing experts today for your free, confidential consultation!