Services - mtDNA Test

mtDNA Maternal Lineage Test

The mtDNA maternal lineage test is used to determine whether two or more individuals are
related through their mothers (through the maternal/female line). This test is often used to
provide additional evidence in difficult maternity cases where the alleged mother is not
available for testing. Results of this testing may also be used to confirm the biological
relatives of an adoptee.

Mitochondrial DNA (mtDNA) is inherited through the maternal line—that is, all sons and
daughters inherit their mother’s mtDNA. However, only daughters can pass on their mother’s
mtDNA to their offspring.

Mitochondrial DNA is composed of a string of DNA molecules in a particular order, or
sequence. In the mtDNA test, a short segment of the mtDNA is sequenced (the order of
DNA molecules is determined) and the mtDNA sequences from each individual are compared
to see if they could come from the same maternal line. Everyone from the same maternal
line will have similar mtDNA sequences.

There are many scenarios in which the mtDNA test may be used. To determine if this test
will help you in your particular situation, please call 1-800-My-Daddy. One of our caring,
knowledgeable case managers will review the information you provide and guide you through
the testing