Your paternity test results will make reference to the combined paternity index (CPI). It is important to understand that results are based on statistical probability. The analysis seeks to establish the chances that a genetic marker passed on to a child has been passed on by his or her biological father and not another random individual in the same ethnic group. Laboratories analyze a total of 15 genetic markers for each DNA sample and compare the genetic markers between alleged father and child. For each marker scientists create a paternity index which they then go on to work out the combined paternity index through multiplication. This is all based on genetic evidence which will consequently be turned into a percentage which will show an exclusion rate of 100% for the non biological father and 99.99% inclusion rate for paternity. More information can be found by clicking on How to Interpret your Paternity Test Results.
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