DNA Sibling Test
Fast, Powerful and Proven
The DNA Sibling Test is used in situations where the alleged parent(s) are not available for testing. The DNA Sibling Test provides the likelihood that alleged siblings are full siblings, half siblings, or not related at all. Whenever the parent(s) in question are available for testing, the DNA paternity or maternity test is recommended over the DNA sibling test. However, in situations where the alleged parents are missing or deceased, then the sibling test is the next best option for investigating the relationship of potential siblings. The full genetic report is included with every test.
Turnaround Time: DNA Sibling Testing is completed 3 to 5 business days after the samples arrive at the laboratory. Results are released immediately once the testing is completed.
Description: During a DNA sibling test, a buccal swab (mouth swab) specimen is collected from each of the alleged siblings. The sample which is collected contains cells, and most of the cells in our body contain a full set of genetic information in the form of DNA (deoxyribonucleic acid). A person's DNA represents a "genetic blueprint" and like a fingerprint, is unique to each individual. At the laboratory, the DNA is extracted from the cell and specific regions of the DNA are amplified by a process known as PCR (polymerase chain reaction) for careful examination. The DNA pattern of the siblings are compared to each other. A statistical analysis is performed based on the match type typically expected for true biologically related sibling pairs, and a "full sibling index" and "half sibling index" are obtained.
True biologically related full sibling pairs (same father and mother) are typically expected to have a full sibling index value that is greater than 1.0 in their DNA Sibling Test Report. Individuals who are not full siblings are expected to have a full sibling index value that is less than 1.0.
True biologically related half sibling pairs (only one parent in common) are typically expected to have a half sibling index value that is greater than 1.0 in their DNA Sibling Test Report. Individuals who are not related are expected to have a half sibling index value that is less than 1.0.
The greater the sibling index value over 1.0, the higher the likelihood that the two individuals are biologically related as siblings. Likewise, the lower the sibling index value is below 1.0, the lesser the likelihood that the two individuals are biologically related as siblings.
Can the kit be shipped to more than one address if the parties live in different cities? If the parties to be tested live at different addresses, we can split the kit and send the kit to each address separately. Since the kits are individually barcode labeled, they will be tested together once the samples arrive back at the laboratory. To order a split kit, simply state "please split this kit" in the comments box of the online order form. Please also indicate which name and address to send each component. Alternatively, you can choose to have the entire kit shipped to you and you can split the kit yourself and send the components to the other parties in the test.
How long does the Sibling Test take? Results are available in 3 to 5 business days once our laboratory receives the samples from all parties involved in the test.
Ordering a Test: DNA sibling testing can be arranged online, by phone or by fax. Questions can be directed to the laboratory by email at firstname.lastname@example.org or by phone at 1-800-094-072. Our DNA advisors will be able to answer any questions and help you order your test.
Sibling Test Kit Fee Schedule for Year 2017
|Test Type||Private Test Kit|
|2 siblings, 1 mother||AU$670|
|3 siblings, 1 mother||AU$845|