They contacted me once with a child. It was necessary to take an analysis to determine the environment of white spots in the larynx. The analysis was taken quickly. The results were sent to the post office an hour later. That is, it was possible not to go for them again or wait in the laboratory. It is convenient and quite fast. I can't say cheap or expensive by the price, as there is nothing to compare it with. So let's say it's not cheap to get sick now.