According to the website of Jiangsu Provincial Department of Justice, the information of relevant institutions is as follows: Judicial expertise center of Suzhou University: the first judicial expertise center approved by Jiangsu Provincial Department of Justice needs to provide its original identity and collect blood from the center, and accept the entrustment of public security inspection law and lawyers, and will not accept personal entrustment for the time being. At present, the largest number of routine paternity tests are the paternity tests of parents and children (also known as triplets) and father and son (or mother and child). Suzhou Jianda Biotechnology: It belongs to the graduate workstation of Suzhou University, and paternity test is only a part of their business, mainly engaged in cell strain identification. Online reputation is not bad, and anonymous paternity test can be accepted. Samples that can be used for personal paternity testing include routine samples and special samples, where the routine samples include blood stains, hair with hair follicles and oral cotton swabs; Special samples are semen stains, cigarette butts, toothbrushes, chewing gum, etc. The specific costs are all around 3000 yuan for your reference.