DNA Testing Accuracy
DNA Testing Accuracy: DNA testing has the potential to be extremely accurate some laboratories claiming up to 99.9% accuracy. Assuming that directions have been followed home tests can achieve an accuracy rate as high as a laboratory since the samples ultimately end up in a laboratory anyway. However, home tests are subject to a greater margin of error. There is a greater likelihood of samples being collected incorrectly, contaminated, being the wrong sample or subject sabotage. For this reason home tests may not be accepted by courts for legal purposes. Much of this depends on what test you took. Though while the 12 genetic marker test for the Y chromosome is extremely accurate, it only has the 12 markers to match. Doing a 67 genetic marker test will greatly improve the possibilities of matching with someone in a more definite fashion. The probability greatly rises and becomes completely certain. The only testing site doing the 67 marker test is Family Tree DNA.
Some databases will give you the probability of what generation difference your matches are. It is quite amazing how far technology has gotten with DNA, it is really a map of our history and we have just begun learning how to read it. To check out my personal favorite database for genealogical DNA, check this out!
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