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How do pregnancy tests work? - Tien Nguyen


8,940 Questions Answered

TEDEd Animation

Let’s Begin…

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.

What can give a false positive?

About TED-Ed Animations

TED-Ed Animations feature the words and ideas of educators brought to life by professional animators. Are you an educator or animator interested in creating a TED-Ed Animation? Nominate yourself here »

Meet The Creators

  • Educator Tien Nguyen
  • Director Andrew Foerster
  • Artist Mike Ellis
  • Narrator Susan Zimmerman

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