Best Sibling DNA Tests

There are currently around seven and a half billion people in the world. Let that sink in for a moment. With how fast-paced life seems to be nowadays, it can sometimes feel as though we are drowning in a sea of population.

It is no wonder, therefore, that we seek connections, by wanting to find our tribe or family. DNA tests have become incredibly accessible, and you can now get a testing kit to use from home, with the results getting back to you in just a few days.

An increasingly popular DNA test is the one that allows you to search for any secret or lost siblings. For those whose parents haven’t been together for a long time, or for those who might have never met one parent or the other, there might be a small sense of longing, as if something is missing.

Curiosity is a big part of human nature, and there’s nothing wrong with wondering whether you have a sibling out in the world, someone, that shares your blood and perhaps a fraction of your situation. 

It’s true that ancestry or paternity DNA tests are a lot more popular, but it is more than possible to find good sibling DNA tests to use very easily, with the possibility of finding out about a sister or brother. And how wonderful would that be?

Of course, with the DNA testing kits that can be used from home and sent off for results, you need to ensure that they are reliable and accurate, as there’s nothing worse than feeling as though a product has scammed you. That is why you should search the market carefully, ensuring you’re taking your pick out of the best possible options available.

To help out with the cause, we’ve compiled a list of our top five picks for the overall best sibling DNA tests, meaning you don’t have to worry and can just focus on choosing one and getting tested!

In a hurry?

When growing up with siblings you’re 100% going to find them annoying at one point or another. However, finding out about a sibling you didn’t know you have can be an incredibly special feeling, and it can offer comfort if you were feeling lost or lonely within your family situation.

If you’re in a hurry to find out the truth and see if you have a sister or brother out there somewhere, we recommend you check out our number one top option for the best sibling DNA test: the My Forever DNA Sibling DNA Test Kit.

The My Forever DNA is a highly reliable and highly recommended and popular company use for DNA testing. All lab fees and shipping are included with the product, and the entire process is 100% confidential, discreet, and extremely easy and comfortable.

It tests two people to see whether they are full siblings, half-siblings, or unrelated. It is the most reliable test, with 99.99%, testing 46 Genetic markers, which is a lot more than other DNA Sibling tests.

With experienced professionals and a highly accredited laboratory, it is truly the best test you can opt for if you’re looking for accuracy and a trustworthy result.

Here are the main features:

  • Lab fees and shipping included with the product
  • You can test 2 people to see if they are full or half-siblings, or if they are unrelated
  • 99.99% accuracy - 46 Genetic Markers are tested + test is done twice
  • Every test is signed off by the Chief Scientific Officer with +15 years of experience
  • Gold Standard in accreditations - highly reliable and recommended
  • 100% confidential process with excellent customer service
  • Results in 1-3 business days after the samples arrive at the laboratory


[amazon fields=”B06X1BXWCB” value=”thumb”]


[amazon fields=”B077YQFG4F” value=”thumb”]


[amazon fields=”B07Y3CV7L3″ value=”thumb”]


[amazon fields=”B06X1BXWCB” value=”thumb” image_size=”large”]

My Forever DNA is a highly reliable and trustworthy company when it comes to the complicated and sometimes delicate process of testing your DNA to find relatives. The Sibling DNA Test Kit they offer is the most popular and recommended, and for good reason.

All of the lab fees and shipping are included with the product, making the process very easy and struggle-free. With this kit, you can test two people (one of them maybe being yourself), to check whether they are full siblings, half-siblings, or unrelated.

You can also test additional people with the kit for an additional cost, leaving the choice up to you. This test is highly reliable and 99.99% accurate, as this product tests 46 Genetic Markers, which is a lot higher than other competing sibling DNA tests.

Every single test is also tested twice to ensure that it is as accurate as possible. What’s more, every single test is signed off by the Chief Scientific Officer, who has more than 15 years of experience.

The My Forever DNA has also been accredited with many things, making them hold the Gold Standard in accreditations. The entire process is 100% confidential and they provide you with everything needed to perform the test from the comfort of your home.

The results arrive really fast, between 1 to 3 business days after the samples have arrived at the lab. My Forever DNA also provides excellent customer service, as you can call or email them throughout the process for them to solve any doubts or issues you might have.

Overall, it’s the top choice for getting a DNA test for possible siblings, and the incredible levels of accuracy and reliability guarantee your satisfaction, whatever the result. 


  • Lab fees and shipping included with the product
  • You can test 2 people to see if they are full or half-siblings, or if they are unrelated
  • 99.99% accuracy - 46 Genetic Markers are tested + test is done twice
  • Every test is signed off by the Chief Scientific Officer with +15 years of experience
  • Gold Standard in accreditations - highly reliable and recommended
  • 100% confidential process with excellent customer service
  • Results in 1-3 business days after the samples arrive at the laboratory


  • No downsides


[amazon fields=”B077YQFG4F” value=”thumb” image_size=”large”]

The Genovate DNA Sibling Test is another excellent option, able to test whether two people are full siblings, half-siblings, or completely unrelated, without needing any samples from the parents.

It is also reliable and trustworthy, with many customers vouching for it. It is a highly convenient test that can be done from the comfort and privacy of your home, with a fast and painless mouth swab to collect the DNA sample needed.

It has no age limit whatsoever, and the test can be performed on adults and on newborns alike. (Although newborns might need some help with it.)

Another feature that makes it highly convenient, is that the test can be split into two packages that go to two different addresses if the two people getting tested live in different places. 

Every single DNA analysis is run twice, to ensure better accuracy, and it utilizes advanced robotics and experienced analyzers in a fully accredited testing laboratory.

The entire process is 100% discreet and confidential, and the final results are available on a confidential online platform just after 2 business days after the samples arrive at the laboratory.

There is also excellent customer service provided, as you are able to contact the company via email or phone, as well as checking the process online, and they can help solve any doubts or issues you might have. 


  • Tests two people to see if they are full or half-siblings, or unrelated
  • The test can be provided to two people living at different addresses - highly convenient
  • No age limit - very easy test
  • Every analysis is run twice, with advanced robotics and experienced analyzers
  • Fully accredited laboratory - reliable
  • Confidential with results after 2 business days


  • Half-sibling results are often inconclusive


[amazon fields=”B07Y3CV7L3″ value=”thumb” image_size=”large”]

The AlphaBiolabs Sibling DNA Testing Kit is another great option, also reliable and backed by satisfied customers, and able to supply you with an easy and comfortable process that makes the whole thing a lot easier.

Sibling DNA tests aren’t as conclusive as, for example, paternity tests. Instead, sibling DNA tests will analyze the amount of DNA shared and conclude whether two people are full siblings, half-siblings, or unrelated, from the results.

What’s great about the AlphaBiolabs test is that if your results come back as inconclusive and don’t give you a reliable result, they will 100% refund your money guaranteed. Basically, you will either get a satisfactory result or your money back.

The entire process is 100% confidential and sent in a discreet envelope, allowing you to collect the sample and send off the necessary details from the privacy and comfort of your home.

The results are then provided within 3 to 5 business days after the samples are received. The test itself analyzes up to 35 Genetic Markers and is performed at a fully accredited laboratory for reliability.

Overall, it’s a great way of testing two people in an easy and comfortable way, with fast results or your money back. 


  • If results are inconclusive you get a full refund
  • 100% confidential and discreet process - comfortable and convenient
  • Results in 3 to 5 business days after samples are received 
  • Up to 35 genetic markers tested in a fully accredited laboratory
  • Reliable and satisfactory results


  • Not as accurate as other Sibling DNA Tests


[amazon fields=”B086WPRRBG” value=”thumb” image_size=”large”]

The Face Match Express DNA Sibling Test Kit is different from other Sibling DNA Tests, as it has an added step on top of the DNA sample analysis.

As a bonus, it uses advanced and in-depth Electronic DNA Facial Point Connectivity to compare the faces of two different people to determine whether or not they might be siblings, deducting the results from the number of facial similarities, which link back to the DNA they share.

You simply upload a photo of yourself, following the specifications and instructions presented to you in the process. You then answer a questionnaire about personal traits and any other necessary information.

Finally, a face IT expert analyzes and calculates the results, which you can get back on the very same day thanks to how fast and simple the process is.

As for the DNA sample analysis, this product includes express overnight shipping, making the results available to you a lot faster than other DNA kits.

It is completely discreet and confidential, with an easy process that includes a free demonstration video to help you get the DNA sample with ease.

It has also been voted as the best DNA collection kit company, thanks to how easy they make the process. 


  • Extremely easy process
  • Bonus Face Match technology to find similarities through an IT expert analysis
  • Discreet and confidential
  • Free overnight shipping for express results
  • Over 21 Genetic markers tested 


  • Not as reliable and accurate as other DNA testing companies


[amazon fields=”B07CJJV9CD” value=”thumb” image_size=”large”]

The Choice DNA Laboratory Sibling DNA Test Kit is another highly convenient and easy process to test whether two people are full siblings, half-siblings, or completely unrelated.

The shipping and lab fees are completely included with the product, so there are no surprises during the process and everything is clear from the start.

The DNA collection kit is super easy to use, with a painless mouth swab to then send the sample to the laboratory. Choice DNA offers free overnight express shipping so you can get the sample to the lab as soon as possible, and results are then expected between 3 to 6 business days later.

All of the tests are analyzed twice, to ensure better accuracy, and over 21 DNA markers are tested for similarity.

The entire process is completely confidential, with discreet envelopes so that you can perform the test from the privacy of your home without anyone else having to find out about it.

Overall, it’s a very simple test that can be done very easily and is a great option to test whether someone is or isn’t your sibling. 


  • Shipping and lab fees included with the product
  • The kit is very easy to use, with a simple and convenient process
  • Free overnight shipping and results in 3 to 6 business days
  • Tests are analyzed twice, with over 21 DNA markers tested
  • Discreet and confidential - done from home


  • Not as reliable or accurate as other sibling DNA tests

Best Sibling DNA Tests Buying Guide

Testing your DNA to figure out your ancestry or family tree can be a really fun way of finding out about the past and where you come from, and it doesn’t really change anything for your present life, therefore it can be done without fearing the outcome.

Testing your DNA to find a possible sibling is another matter. The outcome can determine many things, making this DNA test highly versatile. You can find out whether someone is your sibling, and whether you share both parents or just one.

Essentially, it expands your family members, completely affecting your present and your life! That is why it’s important to do it right. And by doing it right, we mean choosing a reliable and accurate sibling DNA test, so that you can trust the results completely and the entire process is safe and easy. 

If you haven’t done this before, you will find that you’re suddenly faced with a wide range of DNA testing kit options and different brands claiming to be the best choice. How are you supposed to choose one? It can be tricky, we know.

Especially when you’re trying to make sure that you pick the most reliable and accurate one possible. Truth is, there are a few basic factors to take into consideration that can help determine how good a sibling DNA test is, and you can use them as a guide as you try and choose the test you will use.

We’ve summarized the main factors in this buyer’s guide, in hopes that it will help you, and we’ve added some basic information about sibling DNA tests so that you’re familiarized with the whole process. Good luck! 

What is a Sibling DNA test and how do DNA tests work?

A sibling DNA test is the analysis of the DNA samples of two different people, to determine whether or not they are siblings, which could result in them being full siblings, half-siblings, or completely unrelated. 

It works by comparing the genetic material of both people, using the similarities to determine how likely it is that they are siblings or not. Often, sibling DNA tests will determine siblinghood by checking if they share a parent, by checking the DNA samples, however, this is not always the case. 

The DNA sample is very easy to collect, as it just requires a simple swab of the mouth to be sent off to the laboratory. Experts will then analyze a certain amount of genetic markers and will compare the results between the two people to provide an answer within a few days. 

Accuracy and reliability:

When choosing a Sibling DNA Test, it’s really important to find a company that is as reliable as possible, so that you can be sure that the results are trustworthy and believable.

To ensure this, you need to check the accuracy of the DNA tests. This will usually depend on the number of genetic markers that the test is analyzing. The more markers the test analyzes and compares, the more accurate the result will be. 

You should also look for companies with good customer reviews, and avoid any brands that look dodgy. Look out for official accreditations in the product descriptions, especially around the laboratory they use and the experts involved.

Waiting time for results:

For some, getting tested to determine whether or not someone is your sibling can be a very emotional and delicate process. Long waiting times for the results can be absolute torture, so it’s always good to look for a company that is able to provide you with an answer relatively quickly.

The results should never take more than a week, and you should be able to know for sure within a few business days. Some DNA testing kits offer overnight express shipping so that your sample reaches the laboratory sooner, speeding up the process considerably. 

Privacy policy:

Once again, due to the delicate nature of testing for a sibling, it’s important to be aware of the company’s privacy policy.

The process should ideally be 100% confidential, and you should check whether the envelope or package arrives discreetly, and not with a massive “SIBLING DNA TEST” label on the front of it for all your neighbors to see. 

You should take into account that most of these sibling DNA tests aren’t valid for legal purposes or at court, and are just able to be used for personal reasons and your own information. 

Customer support:

It can be a bit daunting to embark on a DNA testing journey from home, as you need to do many things yourself, such as taking the actual DNA sample.

Usually, the process is very simple, and products will likely come with extensive instructions and manuals so you know exactly what to do. 

However, it is also very important to be offered a good customer support service. Check whether you can contact the company, be it through email or on the phone.

Any doubts or issues that you have should be resolved swiftly and in a friendly manner, ensuring you feel comfortable and at ease during the entire process. 

Frequently Asked Questions

Do siblings have 100% the same DNA?

Although siblings come from the same family tree, the recombination of DNA that happens as it passes down to each descendant means that they do not in fact share 100% of their DNA.

On average, siblings will share around 50% of DNA. This is also true for fraternal twins! This is because the genetic code will be different in some areas, which is what causes different appearances and genetic traits for each individual. 

Are sibling DNA tests accurate?

As a general rule, sibling DNA tests tend to be very accurate, and in most cases, you will reach conclusive results that can reliably determine whether someone is your sibling or not.

However, this can depend on the company you are getting your DNA test with, as you should ensure it is a trustworthy and accurate test that you are being provided with.