This is why it's helpful to have extra test tubes around
I did 10 water tests in the past 24 hours. I used 50% of the solution recommended.
You don't HAVE to freak out when it's high. It could just be residue from the previous test. Just run another test. But I don't recall having a test being 100% off unless it was an error I made.
Don't you have the API test? I still have at least 60-70% of the test solution left.
I have 2-3 different ammonia test kits. Some kits come with 2 ammonia test solution that you need to use at the same time for results, some have 1.