Where to get PCR Tests as a tourist. (The ones the Government offers are only for Argentinians)
Ezeiza Airport
You can get your PCR Test for AR$ 7000 (as of Nov2021)
Diagnóstico Maipu (they have an option to go to your home) https://www.diagnosticomaipu.com/turismocitydm
Rossi https://www.cdrossi.com/
CentraLab https://www.centralab.com.ar/
Hisotest (they go to your home)
Note: This information is from: https://www.turismocity.com.ar/promociones_aereas/p-Donde_hacerse_el_test_PCR_en_Argentina_para_viajar-4295.html