Didn't realize this was a thing until now, but some positive at-home test results can be so faint, they're almost undetectable on first glance. I got covid a week ago and my wife and kids had it 2 days later.
This is a positive test from one of my sons on day 4
For comparison my own positive test result on my 4th day:
Last edited by cs3; 07-30-2022 at 03:51 PM.