How do pregnancy tests work? – Tien Nguyen

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Non-prescription pregnancy examinations provide possibly life-changing outcomes with a quite high rate of accuracy. However just how do they function? Tien Nguyen describes just how each test does a scientifically rigorous, multi-stage experiment that goes throughout in the time that it’ll take you to watch this video clip.

Lesson by Tien Nguyen, animation by Andrew Foerster.

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