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Inspired by this, Crane saw the possibility of this as a home pregnancy test. She thought it was easy enough to do that women could perform this test at home and in a quicker fashion. Crane had no previous background in science, however, she saw making the pregnancy test an at-home and private experience was important and necessary.
The control line of this pregnancy test is blank, making the test invalid. The control line on the left of this pregnancy test is visible, suggesting that the test result is valid. A pale purple line has also appeared on the right hand side (the test line) which clearly signifies that the subject is pregnant.
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.
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]
The hCG test can be used to screen for uterus cancer, or a molar pregnancy, which is when there is abnormal placental growth in the uterus. [9] The hCG test can also be done after a miscarriage to ensure that a molar pregnancy is not present. In men, the hCG test can be used to screen for the presence of testicular cancer. [9]
Tooth powder was historically used among the Romans to clean and whiten teeth, to fix them when loose, to strengthen the gums, and to assuage toothache. [ 2 ] [ 3 ] [ 4 ] They made tooth powder from a variety of substances, such as the bones, hoofs, and horns of certain animals; [ 2 ] crabs; oyster [ 5 ] and murex shells; and egg-shells.
In 1972, Arm & Hammer launched an advertising campaign promoting the idea that a box of baking soda in the refrigerator could control odors. [4] The campaign is considered a classic of marketing, leading within a year to more than half of American refrigerators containing a box of baking soda. [5] [6] This claim has often been repeated since then.
Gravindex is an agglutination inhibition test performed on a urine sample to detect pregnancy. [1] It is based on double antigen antibody reaction. The test detects the prevention of agglutination of HCG -coated latex particles by HCG present in the urine of pregnant women.
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