A Nikkei Asian Review article last Friday reported that it took an average of 5.5 days to get a positive COVID-19 test result in Japan but that the time it takes has grown to 7.3 days because Japan was "slow to get businesses involved" in the testing.
The article, subtitled “Capacity fails to catch up to outbreak as private labs remain unutilized,” pointed out that hospitals “tend to rely on government-run testing facilities,” quoting a testing company representative who said that “There's a strong sense that infectious diseases should be handled by the government.”
The Japan Medical Association warned against simpler, private-sector COVID-19 tests, saying that “Improperly administered tests may not give reliable results, potentially causing confusion.” This is yet more proof that Japan will not change its own system unless gaiatsu (external pressure) forces it to do so.