Sibling DNA Test
Discover the Truth: Confirm Sibling Relationships with DNA Testing
When you need to confirm whether two individuals share one or both biological parents, a Sibling DNA Test offers clear, scientific answers. Whether you’re seeking peace of mind, legal documentation, or answers to long-held family questions, our accredited lab delivers fast, accurate results you can trust.
Sibling DNA testing is especially useful when the alleged father or mother is unavailable for direct testing. Instead, DNA samples from siblings are analyzed to determine the likelihood of a biological relationship.
Why Choose a Sibling DNA Test?
- Resolve Family Questions: Gain clarity about your biological connections when parental testing is not possible.
- Support Legal Matters: Provide court-admissible evidence for cases involving inheritance, custody, immigration, and more.
- Peace of Mind: Understand your family relationships with scientifically backed certainty.
How Does Sibling DNA Testing Work?
Our process is simple, secure, and designed to deliver answers quickly:
- DNA Collection: A painless cheek swab is used to collect DNA samples from each sibling.
- Laboratory Analysis: Our experts compare the DNA profiles to measure shared genetic markers.
- Relationship Likelihood Calculation: The results show a probability percentage indicating the likelihood of a sibling relationship — full siblings, half-siblings, or unrelated.
Who Should Consider a Sibling DNA Test?
You may benefit from sibling DNA testing if:
- The alleged parent is deceased or unavailable for paternity/maternity testing.
- You need biological proof for immigration cases, inheritance rights, child custody decisions, or personal reasons.
- You want to confirm full sibling versus half-sibling relationships.
What Are the Types of Sibling DNA Tests?
We offer two main types of sibling testing:
- Full Sibling vs. Half Sibling Test: Determines if individuals share both biological parents or just one.
- Half Sibling vs. Unrelated Test: Determines whether individuals are biologically related at all.
Not sure which test you need? Our knowledgeable team can guide you to the best option for your situation.
How Accurate Is a Sibling DNA Test?
Our Sibling DNA tests are guaranteed 100% accurate, even when:
- Private testing is just as accurate if you use alternative DNA samples (anything other than a mouth swab)
- Additional relatives (like a mother) can’t participate
Our laboratory uses the latest technology to ensure the most reliable results possible, often exceeding industry standards for accuracy.
How to Order Your Sibling DNA Test
- Order Online: Choose your Sibling DNA Test kit and receive it at home.
- Collect Samples: Use the provided cheek swabs to gather DNA from each participant.
- Return Samples: Send the samples back in the pre-paid packaging.
- Get Results: Receive confidential results securely —in just two business days.
Need help? Our support team is available to assist you throughout the process.
Why Trust Our Lab?
- Accredited Laboratory: Our testing lab exceeds the strict national and international standards for DNA testing.
- Fast Turnaround: Most results are ready in 2 business days.
- Affordable Pricing: Transparent pricing with no hidden fees.
- Exceptional Customer Support: Friendly experts ready to answer all your questions.
When you need answers, trust a lab that delivers clarity, compassion, and scientific accuracy.
Sibling DNA Test
Peace of Mind Test- Fast 2 - Business-Day Results
- Full or Half-Sibling DNA Test
- Affordable and 100% Accurate
- All-inclusive - no hidden fees
all lab fees, and free overnight return shipping.*
Legal Sibling DNA Test
Legally Admissible Results and Documents- Court-Admissible Results for Legal Matters
- Certified Collection at Over 3,500 Locations
- AAABB Accredited Laboratory DNA Testing
- Priority Lab Processing & Secure Delivery