A DNA paternity test

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frankwatson's picture
A DNA paternity test

A DNA paternity test is the most accurate method to confirm the biological relation between the alleged father and child. The DNA test’s results exclude he who is not the father by a margin of 100% accuracy, and confirms the biological paternity by 99.999%. For more information about the DNA test, or to order an at home paternity test, visit www.easydna.co.uk                                                                                                                                                   

20101975's picture
If the test gives result with

If the test gives result with 100% accuracy why the test uses then the number of 99.999% for confirming the biological paternity?

Nic's picture
Possibly identical twins? 

Possibly identical twins? 

I am not sure myself
Probably a legal thing where they cannot confirm 100%

Ivan Delgado
Ivan Delgado's picture
When using paternity tests, a

When using paternity tests, a 100% score implies that there is no chance for error. When you say that the result is 99.999% accurate it means that there is a 0.001% chance that there may be an error in the results (i.e very low).

One such source of error can be an identical twin. About 0.2% of the human population consists of monozygotic twins, so finding one such twin within a 0.001% error is reasonable.

Most paternity test can theoreticallty distinguish one person in 100 billion, but a large number of considerations make its power of identification a lot lower. Just laboratory error, to mention but one such consideration, lowers the accuracy of a paternity test several fold. 

Hope this helped. 

dav668's picture


So far there is a kit from LifeTech which offer the sequecing-based result. wonder if there are other simple methods for paternity testing. pls share.