Just used these kits again. Generally really helpful to have with us in Hawaii, but of the 5 LAMP tests we needed to take to head home, my wife's got a ""Damaged specimen" error and was not useable, so we had to scramble to find a clinic. Not sure what happened, I set up all 5 tests in the same manner so I guess just bad luck.
Also note - if you are taking photos of multiple results, I've had to kill the app between each person, otherwise the camera is just black.
So, cautionary tale: Carry an extra, or take the tests with enough of a window that if you had to scramble on a weekend in a semi-remote place (like Kauai) you have time to do so!
T.