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- Cell-free_fetal_DNA abstract "Cell-free fetal DNA (cffDNA) is fetal DNA circulating freely in the maternal blood stream. It can be sampled by venipuncture on the mother. Analysis of cffDNA provides a method of non-invasive prenatal diagnosis.cffDNA originates from the trophoblasts making up the placenta. It is estimated that 2-6% of the DNA in the maternal blood is fetal in origin. The fetal DNA is fragmented and makes its way into the maternal bloodstream via shedding of the placental microparticles into the maternal bloodstream (figure 1). Studies have shown that cffDNA can first be observed as early as 7 weeks gestation, and the amount of cffDNA increases as the pregnancy progresses. cffDNA diminishes quickly after the birth of the baby, so that it is no longer detectable in the maternal blood approximately 2 hours after birth. cffDNA is significantly smaller than the maternal DNA in the bloodstream, with fragments approximately 200bp in size. Many protocols to extract the fetal DNA from the maternal plasma use its size to distinguish it from the maternal DNA.Studies have looked at, and some even optimized, protocols for testing non-compatible RhD factors, sex determination for X-linked genetic disorders and testing for single gene disorders. Current studies are now looking at determining aneuploidies in the developing fetus. These protocols can be done earlier than the current prenatal testing methods, and have no risk of spontaneous abortion, unlike current prenatal testing methods. Non-invasive prenatal diagnosis (NIPD) has been implemented in the UK and parts of the US; it has clear benefits above the standard tests of chorionic villi sample (CVS) and amniocentesis which have procedure-related miscarriage risks of about 1 in 100 pregnancies and 1 in 200 pregnancies, respectively.As a method of prenatal diagnosis, cell-free fetal DNA techniques share the same ethical and practical issues, such as the possibility of prenatal sex discernment and sex selection.".
- Cell-free_fetal_DNA wikiPageExternalLink www.ariosadx.com.
- Cell-free_fetal_DNA wikiPageID "38788101".
- Cell-free_fetal_DNA wikiPageLength "36147".
- Cell-free_fetal_DNA wikiPageOutDegree "35".
- Cell-free_fetal_DNA wikiPageRevisionID "682610711".
- Cell-free_fetal_DNA wikiPageWikiLink Amniocentesis.
- Cell-free_fetal_DNA wikiPageWikiLink Aneuploidies.
- Cell-free_fetal_DNA wikiPageWikiLink Aneuploidy.
- Cell-free_fetal_DNA wikiPageWikiLink Bleeding.
- Cell-free_fetal_DNA wikiPageWikiLink Category:Blood.
- Cell-free_fetal_DNA wikiPageWikiLink Category:DNA.
- Cell-free_fetal_DNA wikiPageWikiLink Category:Obstetrical_procedures.
- Cell-free_fetal_DNA wikiPageWikiLink Chorionic_villi_sample.
- Cell-free_fetal_DNA wikiPageWikiLink Chorionic_villus_sampling.
- Cell-free_fetal_DNA wikiPageWikiLink DNA.
- Cell-free_fetal_DNA wikiPageWikiLink Down_syndrome.
- Cell-free_fetal_DNA wikiPageWikiLink False_positive.
- Cell-free_fetal_DNA wikiPageWikiLink False_positives_and_false_negatives.
- Cell-free_fetal_DNA wikiPageWikiLink Fertilisation.
- Cell-free_fetal_DNA wikiPageWikiLink Fetus.
- Cell-free_fetal_DNA wikiPageWikiLink Genetic_disorder.
- Cell-free_fetal_DNA wikiPageWikiLink Gestational_age.
- Cell-free_fetal_DNA wikiPageWikiLink Hemorrhage.
- Cell-free_fetal_DNA wikiPageWikiLink Hyperemesis_gravidarum.
- Cell-free_fetal_DNA wikiPageWikiLink Massive_parallel_sequencing.
- Cell-free_fetal_DNA wikiPageWikiLink Massively_parallel_sequencing.
- Cell-free_fetal_DNA wikiPageWikiLink Miscarriage.
- Cell-free_fetal_DNA wikiPageWikiLink Natera.
- Cell-free_fetal_DNA wikiPageWikiLink Non-invasive_prenatal_diagnosis.
- Cell-free_fetal_DNA wikiPageWikiLink Polyhydramnios.
- Cell-free_fetal_DNA wikiPageWikiLink Positive_and_negative_predictive_values.
- Cell-free_fetal_DNA wikiPageWikiLink Positive_predictive_value.
- Cell-free_fetal_DNA wikiPageWikiLink Pre-eclampsia.
- Cell-free_fetal_DNA wikiPageWikiLink Preeclampsia.
- Cell-free_fetal_DNA wikiPageWikiLink Prenatal_diagnosis.
- Cell-free_fetal_DNA wikiPageWikiLink Prenatal_sex_discernment.
- Cell-free_fetal_DNA wikiPageWikiLink Preterm_birth.
- Cell-free_fetal_DNA wikiPageWikiLink Preterm_labor.
- Cell-free_fetal_DNA wikiPageWikiLink RHD_(gene).
- Cell-free_fetal_DNA wikiPageWikiLink RhD.
- Cell-free_fetal_DNA wikiPageWikiLink Sensitivity_and_specificity.
- Cell-free_fetal_DNA wikiPageWikiLink Sex_selection.
- Cell-free_fetal_DNA wikiPageWikiLink Spontaneous_abortion.
- Cell-free_fetal_DNA wikiPageWikiLink Trophoblast.
- Cell-free_fetal_DNA wikiPageWikiLink Venipuncture.
- Cell-free_fetal_DNA wikiPageWikiLink Whole_genome_sequencing.
- Cell-free_fetal_DNA wikiPageWikiLink X-linked_genetic_disorder.
- Cell-free_fetal_DNA wikiPageWikiLink File:Cell_free_fetal_DNA_shedding_into_maternal_bloodstream.pdf.
- Cell-free_fetal_DNA wikiPageWikiLinkText "Cell-free fetal DNA".
- Cell-free_fetal_DNA wikiPageWikiLinkText "cell free DNA".
- Cell-free_fetal_DNA wikiPageWikiLinkText "cell-free DNA".
- Cell-free_fetal_DNA wikiPageWikiLinkText "cell-free fetal DNA".
- Cell-free_fetal_DNA hasPhotoCollection Cell-free_fetal_DNA.
- Cell-free_fetal_DNA wikiPageUsesTemplate Template:Reflist.
- Cell-free_fetal_DNA subject Category:Blood.
- Cell-free_fetal_DNA subject Category:DNA.
- Cell-free_fetal_DNA subject Category:Obstetrical_procedures.
- Cell-free_fetal_DNA hypernym DNA.
- Cell-free_fetal_DNA type Species.
- Cell-free_fetal_DNA type Obstetric.
- Cell-free_fetal_DNA comment "Cell-free fetal DNA (cffDNA) is fetal DNA circulating freely in the maternal blood stream. It can be sampled by venipuncture on the mother. Analysis of cffDNA provides a method of non-invasive prenatal diagnosis.cffDNA originates from the trophoblasts making up the placenta. It is estimated that 2-6% of the DNA in the maternal blood is fetal in origin.".
- Cell-free_fetal_DNA label "Cell-free fetal DNA".
- Cell-free_fetal_DNA sameAs Zellfreie_fetale_DNA.
- Cell-free_fetal_DNA sameAs ADN_fetal_en_células_libres.
- Cell-free_fetal_DNA sameAs DNA_fetale_libero_circolante.
- Cell-free_fetal_DNA sameAs Celvrij_foetaal_DNA.
- Cell-free_fetal_DNA sameAs m.0rpj94g.
- Cell-free_fetal_DNA sameAs Q14225730.
- Cell-free_fetal_DNA sameAs Q14225730.
- Cell-free_fetal_DNA wasDerivedFrom Cell-free_fetal_DNA?oldid=682610711.
- Cell-free_fetal_DNA isPrimaryTopicOf Cell-free_fetal_DNA.