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  Special DNA Tests - Siblingship DNA Testing

Siblingship DNA Testing

Initiate Test | Participants | Type of Samples | Procedure | How to Video | Understanding Results  

Siblingship DNA Testing

is used to determine if two or more individuals biologically share one or both parents. There are two types of DNA siblingship tests for which samples can be tested:

Full-Siblingship DNA Test

Half-Siblingship DNA Test

Full-Siblingship DNA testing involves two or more individuals potentially born of the same biological parents. Full siblings share much more of their DNA than individuals that are not related to one another. On average, full siblings have 50% of their DNA in common. Half-Siblingship DNA testing involves two or more individuals who potentially share only one biological parent. Half siblings generally have 25% of their DNA in common. When the issue of siblingship is in question, the recommended method to determine whether individuals are true biological siblings is to test them and their alleged parent(s). In situations where the alleged parents are unavailable for testing, a DNA siblingship test can be performed by testing only the samples from the alleged siblings. Including at least one alleged common parent greatly increases the accuracy of the analysis and is recommended, if at all possible. To order a Siblingship DNA Test click here
General Procedure
Call our DNA specialists at toll free 800-DNA-EXAM (800-362-3926) or click here to contact us to initiate a Siblingship DNA Test. DNA samples may be collected from two or more alleged (full or half) siblings at home (using our DNASwabTM

DNA Sample Collection Kit

) or at one of our DNA collection sites across the U.S. Parents' samples are strongly recommended. The samples are obtained using a buccal swab (provided by our laboratory). After samples are checked in to our laboratory, results will be available within 5-7 business days.
Probability of Relationship
  <1% to >99%
  5-7 business days, upon receipt of all samples
 Order Now  
Full-Siblingship Test - Legal
  • 2 alleged siblings and 1 parent (optional, but strongly recommended)
  • Result within 5-7 business days
  • Notarized test report

Chain of custody sample collection is an additional fee.

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Full-Siblingship Test - Private
  • 2 alleged siblings and 1 parent (optional, but strongly recommended)
  • FREE DNA collection kit (buccal swab samples only)
  • FREE Overnight return shipping
  • Result within 5-7 business days
  • Certificate of Analysis by mail
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Half-Siblingship Test - Private
  • 2 alleged half siblings and 1 parent (optional, but strongly recommended)
  • FREE DNA collection kit (swab samples only)
  • FREE Overnight return shipping
  • Result within 5-7 business days
  • Certificate of Analysis by mail
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*Prices valid only in the USA
*Prices outside the USA vary by country
 Siblingship DNA Test Summary  
The Steps are as follows:
1. Order DNA Test
Order a test online or call our DNA specialists at toll free 800-DNA-EXAM (800-362-3926) to request a FREE DNASwabTM DNA Sample Collection Kit. Or, for legal purposes, arrange an appointment for DNA sample collection at a network facility nearest you.
2. Collect DNA Samples & Return
Samples are obtained using buccal swabs, then returned to our lab.
3. Receive Results
Results will be available within 5-7 business days, upon our receipt of all samples and will be mailed to the authorized designee(s).
*For detailed instructions, click here
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"I just want to thank the continued professional and courteous service your Customer Service team provided me during the stressful waiting period for the DNA results. I contacted both your phone support and instant chat support teams at least twice and received concerned support each time. Never did I feel like they thought I might be calling too much and needed to be more patient. I truly appreciate their consideration and patience during this time."
  Toni, January 2011  
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