Sibling DNA Test 2018-04-26T19:43:38+00:00

Sibling DNA Test – $159 (full or half siblings)


Results available as fast as ONE BUSINESS DAY!

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Our sibling DNA test is 1,000 times more powerful than standard laboratory or drugstore DNA testing kits.

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.

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, 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.

Bio-Gene DNA’s sibling test is provided at the lowest possible cost 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 with the initial testing.

Need to test someone in a different location? No problem!

We can send DNA collection kits to multiple addresses. When ordering, select how many kits you need (one per address is recommended). You will be able to list the names and addresses to send the kits to on the order form. They are each coded with the same case number to be matched in the lab.

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 $100.00.

One day processing is not available for non-standard samples.

How much does a sibling DNA test cost?

A DNA test may well be the most important test you will ever take. We guarantee the highest quality testing at the most affordable prices. We process thousands of DNA samples every year for lawyers, physicians, adoption agencies, and private individuals.

The price for testing includes a Bio-Gene DNA collection kit sent to you by USPS Priority mail, all collection materials, a prepaid mailer for returning your samples, all lab processing fees, and results from our AABB accredited DNA testing lab. If you do not want a kit sent to you for privacy or other reasons, we also allow the option to make your own kit and will email you a case number and step-by-step instructions for collecting and send your DNA samples to our lab for processing.

Cost Number of People Testing Processing Time
$159 2 siblings 3-5 Days
$159 2 siblings + one mother 3-5 Days
+$100 Each additional person 3-5 Days
+$100 Non-standard DNA Sample (per sample) 3-5 Days
+$100 One day processing 1 Business Day

Often Asked Questions

Yes! The price of the test includes one Bio-Gene DNA test kit shipped USPS Priority mail to you, all DNA collection supplies, a prepaid overnight UPS mailer to return your samples to the lab (USA addresses only for the return mailer), all lab processing and results from our AABB accredited testing lab.

If you need more kits sent to different addresses, each additional kit includes everything mentioned above for an additional $9.95 per address.

We often ask “why are other companies so much more expensive?”

Bio-Gene DNA does not believe that knowing the truth about your biological relationships should be taken advantage of. We can provide a higher marker and more accurate test results at a lower price because we believe it is the right thing to do. The answers we provide are life changing and we take that responsibility seriously. That means we will always provide the highest quality test at the lower price to those who entrust us with helping them learn the truth through science and technology.


The standard for sibling testing in the DNA industry is 16 genetic markers. Every marker tested in addition to that increases the power of the results exponentially. Our testing delivers results almost 1,000 times more powerful in the findings that the industry standard.

A parent’s DNA is not needed to perform a sibling test, however it may be helpful in obtaining stronger results.

Each parent (mother and father) contributes 50% of their DNA to their children. When one parent submits a sample for testing, it allows the lab to “subtract out” that parent’s DNA profile and focus only on the remaining parent’s contribution.

If you are seeking to determine if your share the same biological father, the mother’s DNA is helpful for a strong result in about 3% of cases. 97% of the cases arrive at a conclusive result without the mother’s DNA. There is no cost to add one mother’s DNA at the time of the original order.

Bio-Gene DNA was established in 2011 and has helped thousands of people find the truth through DNA testing.

Legitimate reviews require a person to provide their true name and other identifying information. The very nature of DNA testing often calls for privacy and confidentiality. We understand that most people do not want to provide this information online when they have done a DNA test. While we get letters daily from those who we have helped, we do not want to violate the trust they have placed in us by sharing that information. We also do not encourage them to post reviews if they feel they may be uncomfortable in any way.

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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.

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