Wow I did not expect that! Many of them are really hard to read actually! A quick example of two positive tests side by side https://i.redd.it/llw9fmn6dxk51.jp

Wow I did not expect that! Many of them are really hard to read actually! A quick example of two positive tests side by side https://i.redd.it/llw9fmn6dxk51.jpg https://i.redd.it/llw9fmn6dxk51.jpg Even worse, sometimes the reaction is so strong that there is a "dye stealer" effect, where the test line steals the ink from the control line. See for example here: https://i.redd.it/skdynwwi6ll51.jpg https://i.redd.it/skdynwwi6ll51.jpg (Notice how the line is on the "wrong" side) No wonder the misread rate is so high indeed...