Quick tip from me who just took a test: BRING SPARES!
If you are traveling and using these tests I HIGHLY recommend you to bring spare test kits. There is no way to tell before you take the test whether the test might be defective or not. 1 defective test out of 3 doesnt scream good quality control. If I didnt have spares I would’ve had to shell out more money to get a test done where I am which is a massive waste of time and inconvenience. I hope this helps people!
You ain't wrong the two I carried were both duds no reagent in the bottle of either of them.