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2. Pregnancy test - Wikipedia

   en.wikipedia.org/wiki/Pregnancy_test

   A later article, independently authored, granted Hogben credit for the principle of using Xenopus to determine gonadotropin levels in a pregnant woman's urine, but not for its usage as a functional pregnancy test. [40] Hormonal pregnancy tests such as Primodos and Duogynon were used in the 1960s and 1970s in the UK and Germany. These tests ...

3. Rabbit test - Wikipedia

   en.wikipedia.org/wiki/Rabbit_test

   The rabbit test became a widely used bioassay (animal-based test) to test for pregnancy. The term "rabbit test" was first recorded in 1949, and was the origin of a common euphemism, "the rabbit died", for a positive pregnancy test. [4] The phrase was, in fact, based on a common misconception about the test.

4. Pregnancy tests using animals - Wikipedia

   en.wikipedia.org/wiki/Pregnancy_tests_using_animals

   Before immunological pregnancy tests were developed in the 1960s, women relied on urine-based pregnancy tests using animals, ranging from mice to frogs. [1] [2] Advancements in medical technology have enabled women to accurately check their pregnancy status by using 'pee-on-a-stick' pregnancy test kits at home. Before these accessible and ...

5. *This* Is The Best Time Of Day To Take A Pregnancy Test For ...

   www.aol.com/best-time-day-pregnancy-test...

   Many tests claim to be 99% accurate, but research from the Washington University School of Medicine in St. Louis found that up to 5% of tests return a false negative. If you received a negative ...

6. Obstetric ultrasonography - Wikipedia

   en.wikipedia.org/wiki/Obstetric_ultrasonography

   The heartbeat is usually seen on transvaginal ultrasound by the time the embryo measures 5 mm, but may not be visible until the embryo reaches 19 mm, around 7 weeks' gestational age. [5] [11] [12] Coincidentally, most miscarriages also happen by 7 weeks' gestation. The rate of miscarriage, especially threatened miscarriage, drops significantly ...

7. Clearblue - Wikipedia

   en.wikipedia.org/wiki/Clearblue

   Clearblue home pregnancy test system 1985. Clearblue was introduced in 1985 with the launch of the first Clearblue Home Pregnancy Test system, which at the time was owned by Unilever. [4] It was the world’s first “rapid home test” that gave pregnancy test results in 30 minutes and allowed a woman to take a test before going to the doctor. [4]