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  2. Placental site trophoblastic tumor - Wikipedia

    en.wikipedia.org/wiki/Placental_site_trophoblast...

    The tumor may secrete human placental lactogen, [2] and result in a false-positive pregnancy test. [3] A placental site trophoblastic tumor is a monophasic neoplasm of the implantation site intermediate trophoblast, and usually a benign lesion, which comprises less than 2% of all gestational trophoblastic proliferations. Preceding conditions ...

  3. Pregnancy test - Wikipedia

    en.wikipedia.org/wiki/Pregnancy_test

    The two primary methods are testing for the female pregnancy hormone (human chorionic gonadotropin (hCG)) in blood or urine using a pregnancy test kit, and scanning with ultrasonography. [1] Testing blood for hCG results in the earliest detection of pregnancy. [2] Almost all pregnant women will have a positive urine pregnancy test one week ...

  4. False positives and false negatives - Wikipedia

    en.wikipedia.org/wiki/False_positives_and_false...

    The false positive rate is equal to the significance level. The specificity of the test is equal to 1 minus the false positive rate. In statistical hypothesis testing, this fraction is given the Greek letter α, and 1 − α is defined as the specificity of the test. Increasing the specificity of the test lowers the probability of type I errors ...

  5. Hyperemesis gravidarum - Wikipedia

    en.wikipedia.org/wiki/Hyperemesis_gravidarum

    Hyperemesis gravidarum (HG) is a pregnancy complication that is characterized by severe nausea, vomiting, weight loss, and possibly dehydration. [1] Feeling faint may also occur. [2] It is considered more severe than morning sickness. [2] Symptoms often get better after the 20th week of pregnancy but may last the entire pregnancy duration. [6 ...

  6. Routine prenatal test revealed her ‘hidden cancer.’ A study ...

    www.aol.com/news/routine-prenatal-test-revealed...

    A woman got routine bloodwork during her second pregnancy and was shocked when the test results came back: It suggested her baby was healthy, but there was something unusual about her own health.

  7. Blighted ovum - Wikipedia

    en.wikipedia.org/wiki/Blighted_ovum

    In anembryonic pregnancy, levels of the pregnancy hormone human chorionic gonadotropin (hCG) typically rise for a time, which can cause positive pregnancy test results and pregnancy symptoms such as tender breasts. [2] [7] Because of the presence of hCG, an ultrasound is typically necessary to diagnose an anembryonic pregnancy. [3]

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