Take the test again. 50% accuracy rate. I actually have a friend that was preparing for a cruise and tested Positive. Went to a different testing station and tested negative. He was told by his Dr to come in and take a 3rd test. They administered 2 tests at his Dr's office. On in each nostril. Lo and behold, 1 positive and one negative. I won't give the rest of my opinion as I'd probably get banned LOL.