TIL early 20th century pregnancy tests involved a lengthy and costly process where the urine sample would be injected into five mice per woman. The mice would then be dissected to find out if they were ovulating. These results would be obtained in a week.

Read more: https://edmontonjournal.com/wellness/women/history-pregnancy-test

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  1. When you hear people say “the rabbit died,” this is what they are talking about. It was a misconception, because the rabbit *always* died as a result of the test. But it was popularized as an idiom meaning the pregnancy test was positive.

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