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A member asked:
When were pregancy tests invented?
A doctor has provided 1 answer
1920s: http://www.mostlyodd.com/the-frog-test-the-birth-of-the-pregnancy-test/ Female Frogs were injected with urine from a woman thought to be pregnant. If there was pregnancy hormone in the woman's urine, this would make the frog lay eggs. This way, within 24 hours a pregnancy could be determined.
Answered 12/27/2015
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