The DNA found in cells in your saliva could maintain its integrity for a couple of weeks. This is provided that the samples are collected correctly (Following the guide on our website and in our kit Click Here). Obviously the DNA sample has to be stored properly. If saliva swabs are used, it’s important to leave swabs to dry completely before being placed in an envelope. They also need to be placed in a dark and dry place. Other types of samples can keep for different periods of time. We have had many successful cases where we were able to extract DNA from samples that are years old. We are unable to guarantee the success of this extraction in advance and testing is at your own risk. The fresher the sample is the higher the chance of successful extraction.

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