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2. Cell-free fetal DNA - Wikipedia

   en.wikipedia.org/wiki/Cell-free_fetal_DNA

   Cell-free fetal DNA (cffDNA) is fetal DNA that circulates freely in the maternal blood. Maternal blood is sampled by venipuncture. Analysis of cffDNA is a method of non-invasive prenatal diagnosis frequently ordered for pregnant women of advanced age. Two hours after delivery, cffDNA is no longer detectable in maternal blood.

3. Noninvasive prenatal testing - Wikipedia

   en.wikipedia.org/wiki/Noninvasive_prenatal_testing

   The NIPT test does not put the mother or the fetus in any type of danger compared to the other invasive tests that are available, making it the safest option for prenatal testing. Studies have found that the in the instance of detecting Trisomy 21 has a reliability value of 99.2%, which makes NIPT more reliable than other tests than are ...

4. Ballard Maturational Assessment - Wikipedia

   en.wikipedia.org/wiki/Ballard_Maturational...

   The New Ballard Score allows scores of −1 for the criteria, hence making negative scores possible. The possible scores then range from −10 to 50, the gestational range extending up to 20 weeks. (A simple formula to come directly to the age from the Ballard Score is Age=((2*score)+120)) / 5. Maturity Rating:

5. Prenatal testing - Wikipedia

   en.wikipedia.org/wiki/Prenatal_testing

   At early presentation of pregnancy at around 6 weeks, early dating ultrasound scan may be offered to help confirm the gestational age of the embryo and check for a single or twin pregnancy, but such a scan is unable to detect common abnormalities. Details of prenatal screening and testing options may be provided.

6. 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 ...

7. Category:Tests for pregnancy - Wikipedia

   en.wikipedia.org/wiki/Category:Tests_for_pregnancy

   This category is for articles about tests to see whether someone is pregnant. Pages in category "Tests for pregnancy" The following 10 pages are in this category, out of 10 total.