Trisomy of chromosome 21
It is one of the most common aneuploidy; it refers to the presence of an extra copy of chromosome 21.
Trisomy of chromosome 18
Presence of an extra copy of chromosome 18.
Trisomy of chromosome 13
Presence of an extra copy of chromosome 13.
FetalDNA Base investigates the main anomalies in numbers of chromosomes (aneuploidies): the term Trisomy means that, for that particular chromosome, 3 copies are observed instead of 2, while the term Monosomy means that particular chromosome is observed as a single copy instead of 2.
The FetalDna Base level specifically investigates the anomalies of chromosome 21 (Down syndrome), chromosome 18 (Edward syndrome) and chromosome 13 (Patau syndrome), it represents the overcoming of the traditional combined tests included in the first trimester screenings (e.g. Bi-test, Tri-test, etc.)
It is the test recommended by all the Guidelines and by the Scientific Societies; according to the official indications of the Ministry of Health, the FetalDNA BASE prenatal test must be added to the ultrasound study of nuchal translucency.
This examination has extremely low costs for the patient and a high response speed.
Fetal sex can also be provided upon request but NOT sex chromosomal abnormalities.
In the event that the mother has a negative Rh factor (which can be documented and visible at the time of the FetalDNA request), it is possible to request a free fetal RH analysis.