Wjhonson, I would refer you to this article: "Is DNA forensic evidence accurate?"  - Errors in DNA testing occur relatively frequently.  - It has been suggested that as many as one in every hundred forensic tests performed on the DNA of suspected criminals may give a false result.  - False matches between an individual’s DNA profile and a crime scene DNA profile can occur by chance. Poor laboratory practices can lead to cross-contamination or mislabelling of samples, and test results can be misinterpretated.  - DNA can be damaged by environmental factors such as heat, sunlight and bacteria. This may affect the accuracy of tests carried out. see: "Is it ethical to have a national DNA database? " https://www.yourgenome.org/debates/is-it-ethical-to-have-a-national-dna-database#q6  - Dave Hamm RE: On 11/27/2018 4:09 PM, Wjhonson  wrote: > The entire basis of this thread is to counter the outrageous claim that the type of *autosomal* DNA which is loaded to gedmatch could *EVER* result in a false positive. > It can *never* result in a false positive.  Autosomal DNA is so precise it can tell parent from child, sibling from sibling, cousin from cousin.  There is no such thing as a false positive. > --