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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.
A pregnancy test detects the presence of the pregnancy hormone human chorionic gonadotropin in a person’s body. The body doesn’t produce that hormone until several days after conception.
The false positive rate (FPR) is the proportion of all negatives that still yield positive test outcomes, i.e., the conditional probability of a positive test result given an event that was not present. The false positive rate is equal to the significance level. The specificity of the test is equal to 1 minus the false positive rate.
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 symptoms of false pregnancy can be misinterpreted by the individual as a true pregnancy when the symptoms are actually caused by diseases (like hormone-secreting tumors, alcoholic liver disease, cholecystitis, urinary tract infection, gallstones) or exposure to a substance (like a medication), [2] or other conditions like constipation. [1]
Most people who take a drug test take a presumptive test, cheaper and faster than other methods of testing. However, it is less accurate and can render false results. The FDA recommends for confirmatory testing to be conducted and the placing of a warning label on the presumptive drug test: "This assay provides only a preliminary result.
It can be done as early as 11 days after suspected pregnancy. Another pregnancy test can be performed through a lab test by MD referral. This can be done as early as 3-5 days.--Xerxes Grinder 03:07, 9 September 2009 (UTC) —Preceding unsigned comment added by Xerxesgrinder (talk • contribs)
Bill Belichick's much-discussed romance with Jordon Hudson briefly took center stage during Thursday's NFL Honors ceremony.. Belichick, 72, has been linked to the 24-year-old Hudson since 2023.