When a battery of tests has been performed, we have a good genetic description of the father. If the tested man does not fit this description, he would be excluded as the father. Courts treat exclusion results as conclusive evidence of non-paternity. If the tested man does fit the genetic description, a probability of paternity is calculated, assuming that all else is equal. No, if DNA tests are to be done.
Blood is the preferred specimen, but other tissues can be used.
A convenient alternative method is to use cells taken from the inside of the cheek. However, some courts may prefer blood tests, so the parties should agree to accept other specimens. The issue of paternity depends not only on the test results, but also on considerations of fertility, access of the tested man to the mother, the issue of other possible fathers, etc. This other evidence should be considered. Appointments can also be made now through the Internet by email upon receipt of the e-mail, a clerk from our office will contact you to confirm the agreed date and time for testing.