There was an actual report from Florida about the people in the car line who were informed they were positive even though they left the line. Turns out that some areas in Florida were counted as they provided name and contact information. Then the tests were run by vehicle number instead of by name. Most times I have been to a lab, they verify my name as they are putting a label on the samples. It wouldn't affect the positive count, and it wouldn't affect the percentage of positives. It would however cause everyone behind the person who left the line to receive results of someone else, so the tests at that point are useless.
If so many people have been incorrectly identified as positive in the state’s system so easily, how accurate are the numbers that are released daily?
www.mysuncoast.com
I too have had people tell me that "two friends" had this happen to them at an ER room. Those people have different sets of friends, so it is doubtful they are talking about the same person. None of those people who told me was able to identify the "two friends". Facebook memes spread very rapidly through people who are gullable.
EDIT: Also I am not even aware that people can go to wait at an ER to get tested. When I have looked you have to make an appointment at a testing site. The local testing site doesn't allow people to enter. You have to call when you arrive for your appointment and they come to your car to take the sample.