We have used them multiple times and I feel good about them. We did have 2 tests that did not report correctly. I witnessed both of these and believe they were both user errors. Be sure to follow directions and don't touch the parts you aren't supposed to touch (on the card and swab), and don't move them around while awaiting results. They acutally sent us a free new set of 6 because of our "bad test". We found that there were no waiting times early in the morning, but did have longer waits in the middle of the day. We are coming down in 3 days and are brining 4 tests for the 2 of us (just to have a couple of back-ups).
Also, one mistake I made was sending in the password protected results to the USVI Portal (which they could not open). Be sure and do a screen shot of the report and save and send.