More sibling DNA markers tested means the most accurate sibling DNA test. It’s a scientific fact.
We offer sibling DNA testing is over 1,000 times more powerful than the industry standard 16 marker sibling test.
Our DNA testing for sibling relationships is composed of at least 50% more specific sibling markers than the DNA industry standard. We have chosen not to offer lower genetic marker testing when performing a sibling DNA test because of our concerns regarding the accuracy of the results. This allows for us to deliver results that are the most accurate available (based on the genetic samples provided). The results from our sibling test are so accurate they are the same for both legal and home testing options.
This is the most popular testing option for reliable results for both half and full siblings, with results that are written in non-scientific language and are easy to understand.
Please contact a Bio-Gene DNA Genetic Consultant for a no-charge consultation if you have additional questions.
What is sibling DNA testing?
Sibling DNA testing determines the statistical probability that two or more persons are or are not biologically related as full or half brothers and/or full or half sisters.
A sibling test is normally performed when a standard paternity test is not possible making this test the best way of establishing paternity through the alleged father’s suspected children to see whether they are biologically related to each other.
Full sibling vs half sibling DNA testing
What makes two children full-siblings or half-siblings is how much genetic information, or DNA, they share. Each of us gets half our DNA from our mother and half from our father.
Full siblings have the same mother and the same father, so these siblings get all of their genetic information from the same two people. Half siblings only share DNA from one parent. The genetic information from the other parent is different.
If you are testing to determine if you are a full sibling (sharing both parents) or a half sibling (sharing only one parent) it is helpful, but not necessary for an accurate result, to have the mother of one of the alleged siblings submit a DNA sample.
Using the DNA of the mother (or father in the case of a maternal sibling case) allows us to eliminate the parent’s portion of the DNA from each sibling’s genetic profile, and focus only on the other parent’s contribution to the genetic code. This is the lowest cost sibling test available using as many alleles as we test to allow you to know the truth with absolute certainty.
There is no additional cost to include one mother’s DNA sample.
Private DNA testing is not available to New York residents due to New York state law. Legal DNA testing may be performed if ordered by a physician or attorney.
one day DNA results
Fast DNA results. One day processing now available!
We know how important these answers are to you, and we want to help you learn the truth as quickly as possible. Our lab is now able to offer rush processing having your results available in ONE business day after all samples have been received. The cost of one day processing is an additional $75.00.
One day processing is not available for non-standard samples.
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How to take a home sibling DNA test
The most accurate method of obtaining your DNA is to use a buccal swab, which is very similar to a “Q-tip” cotton swab. The swabs are rubbed on the inner cheeks of the mouth of those being tested. We provide all the materials needed for the DNA collection in our Bio-Gene DNA Test Kit.
However, we know that sometimes it is not possible to obtain a buccal swab sample. We are often able to test discreet alternative DNA samples. To learn more about non-standard, alternative DNA samples that we can test, CLICK HERE.
How to take a DNA test
same mother different fathers DNA test
|DNA Test Features||Legal DNA Test||Private DNA Test|
|Court Ready/Legally Binding||Yes||No|
|Confidential & Private||Yes||Yes|
|Painless Process (mouth swab)||Yes||Yes|
|AABB Accredited Lab Processing||Yes||Yes|
|Minimum Age Required||No||No|
|Testing In Different Locations||Yes||Yes|
If you need to have a legal DNA test for legal/court purposes please click here.
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How to understand sibling DNA test results
When a DNA test for siblings is conducted, the laboratory will determine the genetic profile of each of the alleged siblings. Based on the type of genetic material exhibited by each person, a sibship index is determined. If the sibship index is less than 1.00, this indicates non-relatedness. If the sibling index is greater than 1.00, this indicates that the two tested individuals are more likely to be true full sibling or half siblings. The higher the value of the sibling index, the greater the likelihood that the two individuals are true biological brothers and/or sisters. This index is translated in a probability percentage for easier understanding. A probability percentage of 90% or greater is a conclusive result for full siblings, and a probability percentage of 80% or greater is a conclusive result for half siblings.