Designing DNA

Archive for December, 2011

The prenatal paternity test is done if you want to establish the paternity of a child doing a DNA test during pregnancy can take a paternity test before birth. As happens in a DNA paternity test standard, the prenatal DNA paternity test compares the DNA profile of the child with that of the alleged father. The child’s DNA profile is formed at conception, so the prenatal DNA test gives the same results as conclusive DNA paternity testing standards.

Prenatal Paternity Test: Invasive Invasive or Not?

For your convenience, I would like at this point to distinguish between invasive prenatal paternity test, the test is not invasive. The word refers to invasive, in this context, the fact that in order to collect fetal DNA for amniocentesis or chorionic villus sampling need to enter the womb of the pregnant mother. These methods involve certain risks, including the miscarriage or loss of amniotic fluid.

The non-invasive prenatal paternity test:

the non-invasive prenatal paternity test requires a blood sample from the mother and another sample from the alleged father. The blood test is a standard that can be done by any doctor or nurse. Once you have taken blood samples need to send them in the laboratory for analysis. Few laboratories have the technology to do this prenatal test.

The test is based on fragments detect fetal DNA in maternal blood samples. It was known for a long time that the pregnant mother carries in her blood of fetal DNA that can be enclosed in the cells (nuclear DNA) or free DNA. From this DNA are mapped genetic markers of the unborn child. As a result, the comparison is made with the genetic markers of the alleged father to determine paternity.

The invasive tests are as follows:

To obtain DNA samples of the unborn child, a gynecologist typically uses one of two procedures for obtaining a DNA sample of the fetus: the chorionic villus sampling or amniocentesis. The type of procedure varies depending on the stage of pregnancy where you want to test. It is important to note that you can not perform a prenatal paternity test using blood or saliva samples of the mother, as the DNA profile of the mother.
The Villa Cento
The villas Centers involves taking a small piece of placental tissue (chorionic villa) from the uterus during pregnancy. The villas Centers you after 10 weeks of gestation.
The ‘Amniocentesis
Amniocentesis is carried out by inserting a needle through the maternal abdominal wall. It is not necessary to use pain-relieving drugs. Before you perform an ultrasound-guided amniocentesis, in order to verify the position of the fetus and placenta and fetal biometry (to determine the size and then fetal gestational age). The operator will choose the most suitable point for inserting the needle. There is no risk of direct fetal injury, because the sampling is performed under continuous ultrasound guidance. It draws a small amount of amniotic fluid (a few milliliters, so many as there are weeks of gestation). After extraction of the needle, making a control to display the ultrasound fetal heartbeat.

Medical Advisory
If you want to implement a prenatal paternity DNA testing, and should first consult with your gynecologist to discuss the procedures involved in the collection of DNA, and the risks involved. If you decide to proceed with DNA testing during pregnancy, your doctor will collect a DNA sample using the two methods described above, (CVS or amniocentesis) and mail them to the laboratory you have chosen to do your DNA testing prenatal paternity.
We also recommend that you contact the laboratory that will do your analysis first in order to allow them to send you a ‘kit’ needed for the collection and shipment of the sample DNA, or to request that you send the kit directly to the obstetrician / gynecologist.