On background, Argentina's testing abilities, from Buenos Aires Times...1,500 tests per day, 13,330 have been conducted from the beginning.
https://www.argentina.gob.ar/sites/default/files/08-04-20-reporte-matutino-covid-19.pdf
The insinuation by OP was that Argentina is intentionally suppressing testing for Cov-19. The reality is otherwise, a chronically underfunded agency, called Instituto Malbrán. A sub-agency of Malbran, the INEI is the main testing centre for the detection of coronavirus in Argentina. Its fundamental activity is to follow the spread of respiratory virus worldwide to preview its arrival in Argentina. But this new pandemic, which exploded a few months ago in China, has not given time for any anticipatory vigilance.
...considering various factors such as the delays in transferring samples, given Argentina’s territorial extent and the transport difficulties, digital training is underway for the rapid diagnosis of coronavirus in laboratories in the City and Province of Buenos Aires, Córdoba, Chaco, Misiones, Santa Fe and Tierra del Fuego.
This project of decentralisation will be extended in a second stage to 35 laboratories in all 24 national jurisdictions. Working via the Internet has a precedent from 2009 when it was used to treat avian flu (626 deaths) and since then has continued functioning for cases of common virus.
The professionalism at the Malbrán continues to be the greatest (and perhaps only) protection Argentina has against the pandemic.
Underfunded staff at Malbrán Institute battle against coronavirus
The ANLIS-Malbrán Institute is on the front line against the Covid-19 pandemic but over the last decade the research institute has suffered heavy cuts.
www.batimes.com.ar