The process of exchanging vouchers is very easy without problems, the staff is very helpful and communication is good, I arrived at 12 less and at that time the staff could give an estimate of my turn around 3, so I can go first or cancel if I don't want to wait, 3 or less I came back, just waited a moment for the swab, and waited for the results for about 10-15 minutes, when the swab the swab officer was not rude and took it from the right and left nostrils, in other places only from one side. Ok