DNA testing centers provide service-oriented DNA analysis for determining biological relationships through DNA paternity testing, DNA genealogy and anthropology testing and sibling DNA testing, and other peripheral services like DNA banking and ID services and DNA detective testing services, among others.

DNA paternity testing is the most popular genetic testing service, and helps in establishing the paternity of not only a child but of an unborn fetus. Most DNA paternity tests are 99.9% accurate and can be used for legal purposes as well. Although DNA paternity tests are admissible in most courts of law, it is recommended that you check your state and local governments for regulations that may govern this service.

DNA testing can also establish the genealogy of a person with the use of genetic markers that are unique to populations. Typically, there are three types of inheritance pattern categories that these markers follow: the autosomal DNA line, paternal DNA line or maternal DNA line. Some of the popular genealogy determination tests are the ancestral origin DNA population test, Native American DNA verification test, Y-Chromosome DNA study and mtDNA sequence analysis.

Sibling DNA testing is designed to determine sibling genetic relationships, and helps to establish the statistical probability of whether the siblings share the same two parents. Sibling DNA tests can be further modified into half-sibling tests and twin zygosity DNA tests. Genetic tests can also determine other DNA relationships like grandparentage, aunt or uncle, first cousin, and so forth.

DNA testing centers also offer comprehensive personal identification services by combining fingerprint, photographic and digital technologies with the power of DNA profiling. Forensic professionals, crime labs, district attorneys and private investigators also use genetic testing to match DNA from evidence found at a crime scene to a geopolitical and photo database.

DNA testing is the most reliable method of testing the true identity of a person and can be used not only to determine paternity of a baby, but can also be admissible in trials as evidence to convict murderers.