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23andMe has rigorous standards that ensure high-quality results. Our team of scientists and medical experts use a robust process to develop genetic reports for our customers. Here are specific examples:

• With one of the largest reference datasets in the world, 23andMe provides customers with one of the most detailed and accurate ancestry breakdowns on the market. Our algorithms make ancestry estimates based on probabilities and they’re generally very accurate, but your results are not set in stone. We are always trying to improve and refine these estimates.

After you provide a saliva sample, 23andMe uses genotyping to analyse your DNA. This means we look at specific locations in your genome that are known to differ between people. We then turn those results into personalised genetic reports on everything from ancestry composition to traits. Note that genotyping is different from DNA sequencing, which looks at every letter in a particular stretch of DNA.

Most adults who are able to provide saliva samples can use the 23andMe kit. However there are some considerations that can complicate the DNA accuracy. Check out our Terms of Service for more info on those cases.

To begin, visit www.23andme.org/start. Once you have successfully registered your DNA testing kit, provided a saliva sample and put the kit in the post, you can use the return tracking link available on your profile homepage to track your kit's progress to the lab. Once your sample reaches the lab, it is typically processed within a few weeks, with results then delivered to your secure online account.

We encourage customers to provide their sample before the "Collect saliva by" date on the side of the collection tube. If your sample collection kit is lost or damaged, or if it has expired, please contact customer care to assist you with getting a replacement kit.

When it comes to understanding your DNA, 23andMe offers trusted insights built on years of scientific research and innovation. As a pioneer in personal genetic testing, we've helped millions of people worldwide learn more about their ancestry and themselves.

With one of the world's largest DNA databases, we provide an unmatched level of detail, accuracy, and discovery in our ancestry product. Our ancestry reports include 5,000+ geographic regions and the option to connect with DNA relatives, making it the most comprehensive ancestry product on the market.

And if you decide to participate in our research program, you'll join millions of others helping advance discoveries in genetics and human health. It's a simple but meaningful way to make an impact in areas like Parkinson's disease, cancer, depression, and more. It's a unique opportunity to contribute to scientific progress, simply by participating from home.

Protecting your privacy and keeping your data secure are top priorities at 23andMe. We're committed to being transparent and giving you clear choices about how your information is used.

So why choose 23andMe? Because it's more than a test. It's a trusted path to self-discovery, backed by science, and built for you.

Your DNA holds powerful information about your ancestry and traits—and at-home genetic testing puts that knowledge in your hands.

Personal genetic testing is about empowerment. It's about discovering your roots, and gaining clarity about how your genes may impact your life, as well as your family's.