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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 .

3. Noninvasive prenatal testing - Wikipedia

   en.wikipedia.org/wiki/Noninvasive_prenatal_testing

   [1] [2] [3] This testing analyzes small DNA fragments that circulate in the blood of a pregnant woman. [4] Unlike most DNA found in the nucleus of a cell, these fragments are not found within the cells, instead they are free-floating, and so are called cell free fetal DNA (cffDNA). These fragments usually contain less than 200 DNA building ...

4. Pregnancy test - Wikipedia

   en.wikipedia.org/wiki/Pregnancy_test

   Serial quantitative blood tests may be done, usually 48 hours apart, and interpreted based on the knowledge that hCG in a viable normal pregnancy rises rapidly in early pregnancy. For example, for a starting hCG level of 1,500 mIU/ml or less, the hCG of continuing, normal pregnancy will increase at least 49% in 48 hours.

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

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

   Pregnancy tests fall into two categories: at-home urine tests and the in-office blood test. At-home urine tests have different thresholds for the level of hCG they’re looking for, Dr. Ahmad says.

6. Percutaneous umbilical cord blood sampling - Wikipedia

   en.wikipedia.org/wiki/Percutaneous_umbilical...

   Percutaneous umbilical cord blood sampling (PUBS), also called cordocentesis, fetal blood sampling, or umbilical vein sampling is a diagnostic genetic test that examines blood from the fetal umbilical cord to detect fetal abnormalities. [1] Fetal and maternal blood supply are typically connected in utero with one

7. Prenatal testing - Wikipedia

   en.wikipedia.org/wiki/Prenatal_testing

   The AFP test is often done in the second trimester using the serum from the maternal blood draw. This test looks at a specific protein that is formed in the liver of the fetus and released into the fluid contents of the womb, which is then absorbed into the mother's blood stream. Multiple determinations stem from the results of AFP testing.