We're comfortable that we don't have the false positives.
What has been occurring, and it still occurs.... This is the oral fluid test, the evidentiary test that we then send off to our lab. Of these, about 2% come back as not sufficient sample to be tested. It's about 2% that come back that they can't detect an amount that we would put before a court.
It is very rare to not have the actual statistic, but I don't have the data that says of the preliminary tests, how many come up negative on the evidentiary test. I'm thinking that's probably about 1%.