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The latest science.
Results you can trust.

Our rigorous standards ensure quality service.

  • Our Genetic Health Risk** and Carrier Status** reports meet criteria for being scientifically and clinically valid
  • All saliva samples are processed in labs in the United States that meet local regulations
  • Our kit is manufactured in accordance with current Good Manufacturing Practices
  • Genotyping is a well-established and reliable platform for analyzing DNA
  • Our team of scientists and medical experts uses a robust process to develop reports to ensure validity
  • Ancestry percentages are derived from our powerful, well-tested system that provides you with ancestry
    estimates down to the 0.1%

How your DNA becomes a report.

Human DNA is about 99.5% identical from person to person. However, there are small differences that make each person unique. These differences are called variants.

Your DNA was passed down from your parents—and their parents and so on. Variants can be linked to certain health conditions, traits and ancestry groups.

Your saliva contains DNA from cells in your mouth. We send you a saliva collection kit and instructions for providing your sample.

Our CLIA-certified lab extracts DNA from cells in your saliva sample. Then the lab processes the DNA on a genotyping chip that reads hundreds of thousands of variants in your genome.

Your genetic data is analyzed, and we generate your personalized reports based on well-established scientific and medical research.

Why genetics is only part of the story.

When it comes to your health and traits, DNA is only part of the story. Other variables come into play, including non-genetic factors, such as your environment and lifestyle.

Our process at work.

To ensure quality, your DNA analysis is performed in US laboratories that are certified by CLIA (Clinical Laboratory Improvement Amendments of 1988) and accredited by the College of American Pathologists (CAP).


Meet some of our researchers.

Here are some of the people behind the science at 23andMe.

"The high quality genetic research we do at 23andMe is possible because of our customers who share their data and want to make a difference."

David H., PhD
Principal Scientist

"I am passionate about genetics because I am fascinated by how humans are different from one another, and what DNA tells us about those differences."

Joanna M., PhD
Senior Director of Research

"Be curious. Ask questions. The more we understand about our fascinatingly complex selves, the better we can take care of each other and the beautiful world we live in."

Joyce T., PhD
VP of Research

Hi. Still have questions about science?

Here are just a few of the things people frequently ask about 23andMe.
If you don't see your question here, get in touch with us.



*The 23andMe PGS test uses qualitative genotyping to detect select clinically relevant variants in the genomic DNA of adults from saliva for the purpose of reporting and interpreting genetic health risks and reporting carrier status. It is not intended to diagnose any disease. Your ethnicity may affect the relevance of each report and how your genetic health risk results are interpreted. Each genetic health risk report describes if a person has variants associated with a higher risk of developing a disease, but does not describe a person’s overall risk of developing the disease. The test is not intended to tell you anything about your current state of health, or to be used to make medical decisions, including whether or not you should take a medication, how much of a medication you should take, or determine any treatment. Our carrier status reports can be used to determine carrier status, but cannot determine if you have two copies of any genetic variant. These carrier reports are not intended to tell you anything about your risk for developing a disease in the future, the health of your fetus, or your newborn child's risk of developing a particular disease later in life. For certain conditions, we provide a single report that includes information on both carrier status and genetic health risk.

Our science



DNA Basics

How your DNA becomes a report

Our researchers

Our lab

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