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

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

    A test that says it can detect pregnancy up to six days before a missed period, for example, generally has a lower hCG threshold than one that says it can detect it up to three days before your ...

  3. Pregnancy test - Wikipedia

    en.wikipedia.org/wiki/Pregnancy_test

    A systematic review published in 1998 showed that home pregnancy test kits, when used by experienced technicians, are almost as accurate as professional laboratory testing (97.4%). When used by consumers, however, the accuracy fell to 75%: the review authors noted that many users misunderstood or failed to follow the instructions included in ...

  4. Primodos - Wikipedia

    en.wikipedia.org/wiki/Primodos

    Primodos was a hormone-based pregnancy test, produced by Schering AG, and used in the 1960s and 1970s that consisted of two pills that contained norethisterone (as acetate) and ethinylestradiol. [ 1 ] [ 2 ] It detected pregnancy by inducing menstruation in women who were not pregnant.

  5. Fertility awareness - Wikipedia

    en.wikipedia.org/wiki/Fertility_awareness

    Pregnancy tests are not accurate until 1–2 weeks after ovulation. Knowing an estimated date of ovulation can prevent a woman from getting false negative results due to testing too early. Also, 18 consecutive days of elevated temperatures means a woman is almost certainly pregnant. [61]

  6. Estimated date of delivery - Wikipedia

    en.wikipedia.org/wiki/Estimated_date_of_delivery

    If the gestational age as calculated from an early ultrasound is contradictory to the one calculated directly from the last menstrual period, it is still the one from the early ultrasound that is used for the rest of the pregnancy. [7] In case of in vitro fertilization, calculating days since oocyte retrieval or co-incubation and adding 14 days ...

  7. Calendar-based contraceptive methods - Wikipedia

    en.wikipedia.org/wiki/Calendar-based...

    In the 1920s, Kyusaku Ogino, a Japanese gynecologist, and Hermann Knaus, from Austria, working independently, each made the discovery that ovulation occurs about fourteen days before the next menstrual period. [13] Ogino used his discovery to develop a formula for use in aiding infertile women to time intercourse to achieve pregnancy.

  8. 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.

  9. Gestational age - Wikipedia

    en.wikipedia.org/wiki/Gestational_age

    For example, if there is a gestational age based on the beginning of the last menstrual period of 9.0 weeks, and a first-trimester obstetric ultrasonography gives an estimated gestational age of 10.0 weeks (with a 2 SD variability of ±8% of the estimate, thereby giving a variability of ±0.8 weeks), the difference of 1.0 weeks between the ...

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