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  2. 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 ...

  3. Postcoital test - Wikipedia

    en.wikipedia.org/wiki/Postcoital_test

    The PCT examines sperm survival in cervical mucus during the pre-ovulatory period and determines whether sperm are migrating into the female reproductive system. It does not predict whether pregnancy can occur. The test is performed 1 to 2 days before ovulation, when estrogen-stimulated cervical mucus is abundant.

  4. False positives and false negatives - Wikipedia

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

    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.

  5. Likelihood ratios in diagnostic testing - Wikipedia

    en.wikipedia.org/wiki/Likelihood_ratios_in...

    Alternatively, post-test probability can be calculated directly from the pre-test probability and the likelihood ratio using the equation: P' = P0 × LR/(1 − P0 + P0×LR), where P0 is the pre-test probability, P' is the post-test probability, and LR is the likelihood ratio. This formula can be calculated algebraically by combining the steps ...

  6. Predictive value of tests - Wikipedia

    en.wikipedia.org/wiki/Predictive_value_of_tests

    Predictive value of tests is the probability of a target condition given by the result of a test, [1] often in regard to medical tests.. In cases where binary classification can be applied to the test results, such yes versus no, test target (such as a substance, symptom or sign) being present versus absent, or either a positive or negative test), then each of the two outcomes has a separate ...

  7. Prenatal testing - Wikipedia

    en.wikipedia.org/wiki/Prenatal_testing

    The results of the blood test are then combined with the NT ultrasound measurements, maternal age, and gestational age of the fetus to yield a risk score for Down syndrome, trisomy 18, and trisomy 13. First Trimester Combined Test has a sensitivity (i.e. detection rate for abnormalities) of 82–87% and a false-positive rate of around 5%. [74] [75]

  8. Cryptic pregnancy - Wikipedia

    en.wikipedia.org/wiki/Cryptic_pregnancy

    The term cryptic pregnancy is used by medical professionals to describe a pregnancy that is not recognized by the woman who is pregnant until she is in labor or has given birth. [1] The term is also used online for a special form of false pregnancy (pseudocyesis), or delusion of pregnancy, in which a woman who has no medical verification of ...

  9. Postpartum disorder - Wikipedia

    en.wikipedia.org/wiki/Postpartum_disorder

    A postpartum disorder or puerperal disorder is a disease or condition which presents primarily during the days and weeks after childbirth called the postpartum period.The postpartum period can be divided into three distinct stages: the initial or acute phase, 6–12 hours after childbirth; subacute postpartum period, which lasts two to six weeks, and the delayed postpartum period, which can ...

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