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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 ...
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]
In general, it's best to wait until you've missed your period, and to take the test first thing in the morning. Learn how timing impacts accuracy from experts.
Judith Vaitukaitis, circa 1971, at the National Institutes of Health, where she helped to develop a sensitive test that ultimately led to creation of the home pregnancy test Vaitukaitis was born in Hartford, Connecticut, [ 3 ] and received a B.S. degree in chemistry and biology from Tufts University in 1962. [ 2 ]
Margaret Crane's patent illustration for "Diagnostic Test Device", the first home pregnancy test. Margaret M. Crane (Meg Crane) is an American inventor and graphic designer who created the first at home pregnancy test in 1967 while working at Organon Pharmaceuticals in West Orange, New Jersey. [1]
Home pregnancy tests are urine tests, and normally detect a pregnancy 12 to 15 days after fertilization. [81] A quantitative blood test can determine approximately the date the embryo was fertilized because hCG levels double every 36 to 72 hours before 8 weeks' gestation. [60] [79] A single test of progesterone levels can also help determine ...