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DNA is shared between a mother and a fetus, resulting in a small amount of fetal DNA in the mother’s bloodstream. Previously, tests to determine paternity using the mother’s blood weren’t as accurate as tests using amniotic fluid taken from the fetus in the second trimester. For most women, the risk of waiting until the second trimester to determine paternity was unacceptable because abortions can only be completed during the first trimester of pregnancy.
Early blood tests to determine paternity are ideal in situations where a decision to abort must be made. For instance, rape victims in committed relationships can use a DNA test during the first trimester to determine whether their partner is the father of the fetus. Early DNA testing can potentially reduce the number of abortions that occur when women are unsure of the father. To obtain a UK paternity test, you will need to find a lab that specializes in very early fetal testing.
Today, early blood tests have been shown to be very accurate. In fact, a recent study using thirty different mothers was conducted that allowed DNA testing companies to prove the accuracy of their tests. In the study, two potential fathers were tested for each mother. In all thirty cases, scientists were able to correctly identify the father correctly. To perform the test,a sample is needed from the father to determine paternity.
The tests work by isolating the mother’s DNA. DNA that is different from the mother belongs to the fetus, which allows scientists to identify the father using fetal DNA. Labs need a sample of plasma from the mother to complete the test, which can easily be provided. The test matches the child’s DNA to the mother first to eliminate the DNA that comes from her. The remaining DNA is used to identify the father. After the samples are collected, results are available from within a few days to several weeks depending on the company you are working with.
Anyone with access to samples from the potential father can use fetal DNA tests. It may be easier to use a sample from your spouse if you suspect the fetus may have a different father. For example, women who have been the victim of rape can use a DNA example provided by their partner to determine whether they are the father. DNA tests can also be used to determine paternity in the case of an extramarital affair to ensure the spouse is the father.
Derek is currently blogging for a immigration DNA testing company.
Image Credit: daia_
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