13 Surprising Facts About At-Home DNA Tests. By Michelle Crouch. Updated on Nov. 28, 2022. There's a lot more too it than just sending off some of your spit. 1 / 13. IvanRiver/Shutterstock.

The human body holds a lot of mysteries, and the world's greatest researchers never cease to dig into the building blocks of life: DNA. From detecting a risk for a certain disease or solving a ...