Is a DNA test reliable?[AUDIO]
The DNA exam to determine paternity is increasingly common around the world, as a way to clarify consanguineity ties between parents and children.A case of alleged babies has been known, inside a hospital in Arequipa, something that was known after this genetic test was applied.Regarding what happened, we will try to explain some important points around this analysis.What does it consist of?A paternity test is done by comparing the DNA sequence of the father, the boy/girl and the mother.Any value below 99.99 % must be taken as non -conclusive.Who are asked for a sample?Regularly the tests are done with father, mother and son, but they can be done only father and son or mother and son.How are samples taken?It can be through a drop of blood, hair or saliva, because they also contain DNA.
They are truthful?According to the RPP News Medical Advisor, Elmer Huerta, no medical exam is infallible."In medicine there is no 100 % effective test, any test, be it an radiography, blood test, cholesterol, glucose or DNA".False positive and false negative.It is when the test gives a result, but in reality it is vice versa."For example for mammograms, the best thing in the world to detect breast cancer, the false positive and false negative is around 10 to 15 percent".
![¿Es confiable una prueba de ADN? [AUDIO]](https://website-google-hk.oss-cn-hongkong.aliyuncs.com/drawing/article_results_6/2022/2/26/125ccab9cf8d86eda8bd954dc5b6c94b.jpeg "¿Es confiable una prueba de ADN? [AUDIO]")
Error range.In 1 in 100 cases in which the analysis was made with blood only of the child and the father, the result will be false positive;And if the blood is both parents and the child, reliability will be 99.9 %.Repeat the exam.As for the case of the alleged change of babies in Arequipa, Dr. Huerta said that new exams are required."Everything has to be checked, a new test must be done.Some centers or prosecutors even two more evidence in different laboratories ".Genetic load."The DNA of both parents is like a kind of personal seal and must coincide very strictly with that of the child.They are technical tests that are seen as digital footprints on a screen ".
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