Brothers or sisters may offer a close genetic match which permits assessment of whether the two subjects are blood related. Comparing DNA from an alleged sibling can also prove the paternity of a child, if obtaining samples from the alleged father or child is impossible due to disputes. This is true for the alleged father's siblings as they too share common genetic info which is enough to supply the data needed for the DNA test of the alleged child.
If in case your situation requires you to obtain DNA test from the relatives mentioned above, you must inform the laboratory where you intend to have the assessment and let them know what the case is and ask their advice for your possible options to obtain DNA assessments.
In the ideal world, paternity tests have samples where the alleged father and child are made available to establish the link between them. But in some cases providing these main samples is just not possible in the current situation, either by will or some other reasons. Nevertheless, there are other DNA procedures possible to establish the genetic relationship of two people.
The DNA does not change in spite of age, even in babies. Prenatal paternity test samples of unborn babies are also possible. DNA tests are possible from samples taken from every body tissue. The DNA can be taken orally and it's the same DNA discovered throughout our body cells and tissues. For this reason the collection of DNA samples are used for paternity testing, sometimes with at home DNA test kits.
The DNA result of paternity test can be analyzed inclusively to determine if the parent is the biological father, or exclusively to determine if the parent is not the real father. If the alleged parent mother is analyzed, the outcomes of DNA tests provide a probability of paternal of 99.99% or much higher for inclusions. The probability of paternity exclusion is always 0%.
The mom's contribution is suggested but not needed for a DNA analysis. Analyzing the alleged mother offers a higher probability of inclusive paternal, but the research is open to doubt, however without proof from the alleged mother.
To use the results of paternity testing in child support and other legal cases, a legal test is chosen, which uses the Chain of Custody process needed to make the results acceptable to courts and other government agencies. Legal Genetics results of paternal assessments are accepted by governments worldwide. The American Association of Blood Banks (AABB) determine paternity examining labs around the world. It is advisable to select a lab that features DNA analysis according to AABB specifications.
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