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How Pregnancy Tests Actually Work! #science #sciencefacts

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How Pregnancy Tests Actually Work! #science #sciencefacts

Ever wondered how a simple stick can detect pregnancy? When you pee on a test, chemicals in your urine react with special strips—one always shows a line, and the second only changes color if a specific hormone (hCG) is present, which is produced after the fertilized egg attaches to the uterus. That’s why two lines mean you’re pregnant! # ...

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