There are many companies around the world that specialize in paternity tests, such as DNA paternity testing and/or testing for diseases like Macular Degeneration and Leukemia, using blood tests known as Polymerase Chain Reaction (PCR's). For these tests, samples of a person's blood are taken and then analyzed in a lab. One such company, 4Peaks, offers both DNA and Polymerase Chain Reaction (PCR) tests. The DNA test is most commonly used for people with ancestry from Europe, North America, or Eastern Asia, and the PCR test is most often used for people with ancestry from Africa, the Middle East, or South America. These tests may also be used to detect and confirm the existence of other genetic disorders.
Because 4Peaks also offers DNA ancestry testing and Polymerase Chain Reaction (PCR) tests, it is popular for people to use this company for paternity claims or to find missing family members. The results from these tests are typically conclusive and provide near 100% match results. Because the PCR test works more slowly than the DNA test, more match possibilities can be achieved. Also, because of the lower levels of charge in a blood sample, it is often more difficult to obtain a DNA sample from someone with very low amounts of blood in their system. Because of this, it is frequently used in cases where DNA results are not immediately available.
In addition to the DNA or Polymerase Chain Reaction test results, 4Peaks offers downloadable PDF files that can be used for legal proceedings. PDF files can be created by choosing the "PDF" program from the "Tools" menu of your 4Peaks download site and then follow the instructions to creating a PDF file of your results. A legal document is generally preferable over a blood draw because a blood draw must be performed in a hospital setting, and medical records are private. You may also want to create a PDF file of your results to send to genealogy agencies that specialize in searching through families for missing family members. If you wish to do a free online search for a particular person, simply perform a search for the person's name and "stem" (based on the latest stem cell research) results should be shown in order to locate them.