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In this tutorial, the presenter demonstrates how to use pregnancy test droppers with urine samples. She explains that the top dropper contains her urine, which is positive for HCG since she is pregnant, while the bottom dropper contains her husband's urine, which should be negative for HCG. She adds three drops of each urine sample to their respective tests and emphasizes the importance of waiting three minutes to read the results, cautioning against reading them after five minutes, as they would be invalid. After three minutes, she notes that both tests show a line in the control areas, confirming that the tests are functioning correctly.