60+ years, thousands of cars, hundreds of tests—we've done the work for you.
State Key Laboratory of Automobile Safety and Energy, Tsinghua University, Beijing 100084, People’s Republic of China * To whom correspondence should be addressed: State Key Laboratory of Automobile ...
Many home pregnancy tests claim to be 99% accurate if used on the day of the expected period. Testing too early can give a false negative because there might not be enough HCG for the test to detect.
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