i believe i got the answer to my own question... I called the urgent care where I would be tested and where there is no timestamp on the emailed results and was told that although there is no time stamp on the emailed results there is a timestamp on the results that the urgent care receives. They said if i need a timestamp they can either email me what they have in their system with the timestamp or I can come in (2 minutes from my house) and pick it up. Boy this is nerve-wracking! Thanks for your insight Scubaman.