DNA testing is the most reliable method of testing the true identity of a person, especially for establishing the accurate parental identity of a child. As most DNA tests are legally binding, such tests can be used in trials as evidence to convict murderers or establish the paternity of a child. Costs for DNA testing generally vary from lab to lab depending upon the size and condition of the sample to be tested, as well as on the usage of the test. For instance, a DNA test for paternity analysis costs somewhere in the region of $200; however, if the test is required for a paternity suit the cost might go up to $500 or $600.

DNA testing costs can range from reasonable to exorbitant, with easy-to-detect genetic linkage tests costing a few hundred dollars, while difficult tests like analysis for focal mutations cost thousands of dollars. Most DNA tests include prices for the entire process, from sample collection to analysis, written reports and even courier costs. However, when opting for a genetic test, it is advisable to find out any hidden cost attached to an analysis.

The cost of DNA testing also depends on the kind of analysis to be undertaken. For instance, in case of a standard DNA paternity test, a person might have to send only about $200, while a legal paternal DNA paternity test might cost around $600. Every additional request or specialized tests adds up to the total cost for genetic evaluation; for example, a standard paternal DNA tests cost might go up by a few hundred dollars if the sample of an alleged relative is also added for analysis.

Although DNA testing costs are generally not covered by insurers, most insurance companies do cover the less expensive tests, and one can find the more information from their insurance agents before submitting a sample.