Sibling DNA Testing | Confirm Biological Relationships with Accuracy
Need to confirm if siblings share one or both biological parents? GameDay DNA offers sibling DNA testing with reliable results to establish paternity or maternity when direct parent testing isn’t possible. This test can also verify relationships suggested by ancestry testing, providing clarity and peace of mind. Contact our experts today for a free consultation!
Sibling DNA Testing Options
GameDay DNA provides two types of sibling DNA tests: legal and at-home.
Legal Sibling DNA Testing
For court-admissible results, legal sibling tests require witnessed sample collection at certified facilities like hospitals or medical offices under strict chain-of-custody protocols.
At-Home Sibling DNA Testing
If legal documentation isn’t required, our at-home sibling test offers the same level of accuracy as legal tests but allows you to collect samples conveniently at home.
Trusted Sibling DNA Testing
Get tested with GameDay DNA, in collaboration with world-renowned DDC, for sibling DNA testing you can trust implicitly:
AABB Accreditation: Our US-based lab holds AABB, CAP, and CLIA certifications for the highest standards in accuracy and reliability.
Fast Turnaround Times: Receive results within 5 business days after sample arrival at our state-of-the-art facility.
Expert Genetic Analysis: PhD-level geneticists meticulously review every test for guaranteed accuracy.
Next-Generation Technology: Using Next Generation Sequencing (NGS) ensures 99.99% accuracy in relationship determination.
Dedicated Support Team: 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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Step 1 - Schedule Your Free Consultation
Speak with our experts to determine the best sibling DNA test option for your needs—legal or at-home.
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Step 2 - Choose Your Sample Collection Method
Opt for in-lab sample collection under strict chain-of-custody protocols or use our convenient at-home kit.
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Step 3 - Lab Analysis & Results Delivery
Our AABB-accredited lab analyzes your samples using advanced technology to deliver accurate results within 5 business days.
Experts in Sibling DNA Testing
GameDay DNA specializes in relationship testing, conducting thousands of tests annually with unmatched accuracy. In addition to sibling tests, we offer:
Grandparent DNA Testing: Confirm biological relationships through grandparents when parents are unavailable.
Maternity DNA Testing: Establish maternal relationships with over 99.99% accuracy.
Avuncular (Aunt/Uncle) DNA Testing: Determine biological connections through extended family members.
Twin DNA Testing: Identify whether twins are identical or fraternal.
Sibling DNA Test FAQs
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The sibling DNA test compares genetic markers between two individuals to determine if they share one biological parent (half-siblings) or both (full siblings). Including the mother’s DNA improves accuracy.
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Yes, sibling DNA tests can verify biological relationships suggested by ancestry testing platforms by providing more precise genetic comparisons.
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Sibling tests are slightly less accurate than direct paternity tests due to fewer shared genetic markers but still provide reliable results with probabilities exceeding 90% when both siblings participate.
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Yes, sibling DNA tests can be used in court cases involving custody or inheritance disputes when conducted under chain-of-custody protocols.
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Sibling DNA tests typically cost between $349–$699 depending on whether it’s an at-home or legal test requiring chain-of-custody documentation.
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Results will indicate either a high probability of relatedness (e.g., 90%+) or low probability (e.g., below 10%). A detailed report will explain these findings in plain language.
Schedule Your Sibling DNA Test Today!
Call our relationship testing experts today for your free, confidential consultation!