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The DNA Test is the most accurate and effective test available to determine family relationships. DNA testing proves or disproves paternity in all cases. Each report of the paternity test clearly indicates whether the tested man is excluded (and therefore cannot be the biological father of the child) or is not excluded (and is therefore the biological father of the child).
The biological samples required to perform DNA paternity tests can be saliva (recommended), blood or hair with bulb, among others. Only blood samples are required in complex kinship cases. The use of a cheek sponge on the inside of the mouth to collect cell samples is a simple procedure that can be sued to obtain DNA and has the same reliability as a blood sample.
There is evidence that is not admissible in court but can be carried out for the peace of the family. Is named 'Unofficial status', and it is a test that cannot be used for legal purposes but that can be done without the explicit consent of the parent.
If what is sought is evidence that can be legally used to prove the paternity of a child before the judge, the evidence should be used 'Official Results'. It is a test that guarantees that the chain of custody of laboratory tests has been respected and that the identity of the person on whom the test is performed is correctly accredited.
In the event that the father is not available at the time of DNA testing, the DNA of the paternal grandparents can be used (as long as there is no doubt about their paternity).
The sibling analysis test tests whether the parties tested are consanguineous siblings (both ties), half siblings, or no relationship.
Relationship analysis is performed when only extended family such as aunts and cousins are available.
In some countries like Spain, there are public laboratories that carry out this type of test. Whenever the child in question is a minor and there is joint custody, the authorization of all parties to carry out the test is essential. They require the authorization of the father and mother, or guardians, to carry out the tests.
Parents now do not need to wait for the coroner's or court's decision to do a paternity test. The novelty is the new services of national and foreign private laboratories that only require the authorization of one of the parents. With affordable prices, DNA paternity tests are already very common.
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