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  2. Amniocentesis - Wikipedia

    en.wikipedia.org/wiki/Amniocentesis

    An amniocentesis is typically performed in the second trimester between the 15th and 20th week of gestation. [5] Women who choose to have this test are primarily those at increased risk for genetic and chromosomal problems, in part because the test is invasive and carries a small risk of pregnancy loss . [ 5 ]

  3. Amniotic fluid - Wikipedia

    en.wikipedia.org/wiki/Amniotic_fluid

    Amniotic fluid is removed from the mother by an amniocentesis procedure, where a long needle is inserted through the abdomen into the amniotic sac, using ultrasound guidance such that the fetus is not harmed. Amniocentesis is a low risk procedure, with risk of pregnancy loss between 1 in 1,500 – 1 in 700 procedures.

  4. Prenatal testing - Wikipedia

    en.wikipedia.org/wiki/Prenatal_testing

    Diagnostic prenatal testing can be performed by invasive or non-invasive methods. An invasive method involves probes or needles being inserted into the uterus , e.g. amniocentesis , which can be done from about 14 weeks gestation, and usually up to about 20 weeks, and chorionic villus sampling , which can be done earlier (between 9.5 and 12.5 ...

  5. Triple test - Wikipedia

    en.wikipedia.org/wiki/Triple_test

    The triple test, also called triple screen, the Kettering test or the Bart's test, is an investigation performed during pregnancy in the second trimester to classify a patient as either high-risk or low-risk for chromosomal abnormalities (and neural tube defects). The term "multiple-marker screening test" is sometimes used instead.

  6. Louise Brown - Wikipedia

    en.wikipedia.org/wiki/Louise_Brown

    Louise Joy Brown (born 25 July 1978) is an English woman noted as the first human born following conception by in vitro fertilisation (IVF). Her birth, following a procedure pioneered in Britain, has been lauded among "the most remarkable medical breakthroughs of the 20th century".

  7. Lecithin–sphingomyelin ratio - Wikipedia

    en.wikipedia.org/wiki/Lecithin–sphingomyelin_ratio

    An amniotic fluid sample is collected via amniocentesis and the sample is spun down in a centrifuge at 1000 rpm for 3–5 minutes. Thin layer chromatography (TLC) is performed on the supernatant, which separates out the components. Lecithin and sphingomyelin are relatively easy to identify on TLC and the predictive value of the test is good.

  8. A Close Look at the Texas Abortion Controversy - AOL

    www.aol.com/news/close-look-texas-abortion...

    Kate Cox, a 31-year-old woman from Dallas, decided to seek an abortion after a prenatal test known as an amniocentesis confirmed on November 28 that her baby had trisomy 18, a chromosomal ...

  9. Digit ratio - Wikipedia

    en.wikipedia.org/wiki/Digit_ratio

    Prenatal hormone exposure can be measured via amniocentesis (usually performed between 14th and 20th weeks of pregnancy), maternal serum sampling and umbilical cord sampling at birth, the latter being a measure of exposure in late gestation. A 2024 meta-analysis has suggested that digit ratio may be related to amniotic fluid testosterone levels ...