Not really how this works. Tests take time and they don't test immediately, also they do pool tests, so multiple samples are mixed and tested. So even if they'd find something they couldn't tell you right there, and then again even if they could they would tell you it would be handled so that nobody else could notice.
Not really how this works. Tests take time and they don't test immediately, also they do pool tests, so multiple samples are mixed and tested. So even if they'd find something they couldn't tell you right there, and then again even if they could they would tell you it would be handled so that nobody else could notice.