Just read in Perfil that the pcr test in Ezezia will cost 2480 pesos and the results will be known in 15-20 minutes. That is a correction to what I had understood earlier: that the results would not be immediate, that you could go home and your contactos estrechos (which I interpreted as household) would have to go with you to the hotel for the quarantine, in the event of a positive test result. I guess if the results are inmediate, your contactos estrechos would be the people you had been traveling with. Not sure about that. They also mentioned that a private lab has set up testing there and it will cost 4100 and the results will be available in 2 hours. I guess that's for folks leaving the country that need a pcr.