Yes. Almost 98% of our paternity testing is done only with a father’s DNA sample and a child’s DNA sample.
You may, however, wish to consider the following information:
(1) Looking at it from a scientific point of view, testing the mother is helpful in some cases because it enables the lab to determine which half of the child’s genes came from her, and therefore which half came from the father. This can, in a small number of cases, increase the strength of the results of a paternity test. Although, in most routine paternity tests, conclusive results are obtained when the mother is not tested, there are certain situations in which testing the mother is very important and strongly recommended.
One example of this type of situation is when a newborn child is to be tested with an alleged father who has not seen the child previously, and who is concerned that the mother might try to test a different child in order to alter the test outcome. In such cases, testing the mother enables the lab to confirm that the child tested is indeed hers, because they would match each other genetically. This type of concern has also been raised by some adoption attorneys, in which an alleged father seeking parental rights to a newborn child he has never seen, and has a concern that the presumptive adoptive parent(s) may substitute another infant in the test, with the intention of obtaining a paternity test result that excludes the alleged father. Including the biological mother in the test eliminates this potential problem.
Testing the mother is of tremendous value in increasing the conclusiveness of more complex relationship tests, such as sibling tests, grandparent tests, avuncular tests, and tests involving closely-related possible fathers (such as brothers).
(2) From a legal standpoint, for legally-admissible paternity tests, if the mother will not be tested, then consent for testing any minor children (or legally-incapacitated adults) must be provided by the mother, by another adult having the legal authority to provide consent, or by court-order. Evidence of legal authority or legal guardianship must be provided.
Journey Genetic Testing does not charge extra for the mother’s DNA sample, for any of our tests, when it is submitted with the initial testing of DNA samples sent to the lab.