The the test it self seems to work and is looks like its fairly accurate. The issue I had was the glass container breaking while I was opening it. You have to snap apart the top part of the ampoule with a breaker leaving the bottom half exposed. On one of the tests, the bottom part broke in my hand and slicing my thumb fairly deeply. Would have liked a different, safer ampoule or a different method of opening.
Reply from Test Kit Plus:
Thank you for your feedback and we’re sorry you got cut by the ampoule. To maximize safety, we recommend holding the ampoule upright in the palm of your hand(s), and breaking of the top part with your thumb(s).