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Court-admissibleSibling DNA Test — Legal / Court-Admissible
We understand this is a sensitive legal matter. Every collection is handled with strict protocol and complete professionalism.
When sibling relationship needs to be established for legal proceedings — immigration petitions, inheritance disputes, custody cases, or birth certificate changes — the legal sibling DNA test provides court-admissible results under strict chain-of-custody protocols. Visit an accredited partner location at the base price, or add a flat mobile dispatch fee for a certified collector to come to you — both options are confirmed at checkout. All parties must present valid government-issued photo ID at collection.
- AABB-Accredited Laboratory
- Chain-of-Custody Available
- Photo ID Verification Required
- No Doctor Referral Required
Trusted nationwide for court-admissible sibling DNA testing with full chain-of-custody documentation.
Price
$499 at partner location
Or $594 with mobile dispatch (+$95)
Results in 5–7 business daysFinal pricing is confirmed before you pay.
Best for: Legal proceedings requiring court-admissible relationship proof — immigration, inheritance, custody, and birth certificate matters
Collection time: approximately 10–15 minutes — a simple, supervised cheek swab for each participant.
From $499 (partner location)
How Does the Legal Sibling Test Work?
Step 1 — Identity verification
All parties present valid government-issued photo ID at collection, required for chain-of-custody documentation and court admissibility.
Step 2 — Supervised cheek swab collection
A certified collector performs a simple cheek swab for each person, at a partner location or via mobile dispatch.
Step 3 — Chain-of-custody documentation and shipping
Samples are sealed, documented, and shipped under strict protocols.
Step 4 — Court-admissible results in 5–7 business days
Results are delivered in a format accepted by courts, attorneys, and immigration authorities.
What You Need to Know Before Booking
- All parties must present valid government-issued photo ID — required for court admissibility
- Including a shared parent's sample (if available) increases accuracy, especially for full vs. half sibling determination — optional but recommended
- Visit a partner location at the base price, or add a mobile dispatch fee for a certified collector to come to you — confirmed at checkout
- Results are court-admissible: accepted for immigration petitions, inheritance disputes, custody cases, and birth certificate matters
Only need personal peace of mind? Our Informational Sibling DNA Test is a flat mail-in option starting at $379.
Frequently Asked Questions
What makes this test court-admissible?
Court admissibility depends on how the sample is collected — not only who analyzes it. Collection follows AABB-accredited chain-of-custody protocols: photo ID verification of all parties, witnessed collection, tamper-evident sealing, and documented custody at every step. Results are processed by an independent AABB-accredited laboratory. Without these protocols, DNA results are not accepted in court regardless of accuracy.
Can this be used for an immigration case?
Yes. Legal sibling DNA results collected under chain-of-custody are commonly used for USCIS and embassy relationship petitions. See our Immigration DNA Testing page for petition-specific guidance, or call us before booking so we can confirm requirements for your case.
What's the difference between legal and informational sibling testing?
Legal testing requires supervised, chain-of-custody collection with photo ID verification and produces court-admissible results. Informational testing is a private mail-in kit for personal knowledge only and is not formatted for court use.
Do we need a parent's DNA sample too?
No, but it helps. Testing two siblings alone can determine a relationship, but including a shared parent's sample (when available) increases accuracy and helps distinguish full siblings from half siblings more precisely.
What's the difference between full and half siblings in these results?
Full siblings share both biological parents; half siblings share only one. The test analyzes shared DNA markers between the two people tested to determine which is more likely, or whether no biological relationship exists.
How accurate is a sibling DNA test?
Sibling testing is generally less definitive than a direct parent-child test, since siblings share DNA more variably. Accuracy improves significantly when a shared parent's sample is included. Your results will include a clear probability statement explaining the confidence level.
Can this be used if the alleged father is deceased or unavailable?
Yes — this is one of the most common reasons people choose sibling testing: comparing two people directly when a parent isn't available to test.
Is this test confidential?
Yes. Results are released only to the authorized parties and, when required, to the requesting attorney, court, or immigration authority. We do not share results with unrelated third parties.