Animated Explanation of How Pregnancy Tests Work

Tien Nguyen explains how pregnancy tests work in the latest TED-Ed video animated by Andrew Foerster.

Over-the-counter pregnancy tests give potentially life-changing results with a pretty high rate of accuracy. But how do they work? Tien Nguyen explains how each test performs a scientifically rigorous, multi-stage experiment that goes from start to finish in the time that it’ll take you to watch this video.

Scott Beale
Scott Beale

Scott Beale is the founder of Laughing Squid and is based in New York City. When not running the blog, Scott can be found posting on Threads and sharing photos on Instagram.