Stop in for a cup of coffee

You know the whole testing thing is confusing. I can't remember the days to wait CDC goes with and not going to look it up.
Wife had a mild case a couple months ago. She read that you can test positive up to 90 days.
She took the CDC guidelines after symptoms were gone waited five days (maybe seven) and returned to normal activities.
Must be a work rule?? But hey as long as their paying...
That's about the way I did it. I never did a final test. I still have some coughing and cold type symptoms.