What is the best and reliable method for COVID-19 diagnosis?
Abbot Laboratories - Very high accuracy, low false-positive/negatives, provides results within 5-10 minutes.
The best method is nucleic acid amplification based test. In case of SARS-CoV2 it is the Real Time RT-PCR, which is widely being used globally. In the coming days other non-PCR based nucleic acid amplification tests may be used.
https://www.cebm.net/covid-19/what-tests-could-potentially-be-used-for-the-screening-diagnosis-and-monitoring-of-covid-19-and-what-are-their-advantages-and-disadvantages/
https://synlab.ee/en/what-tests-to-use-for-diagnosing-covid-19/
WHO has listed the first two diagnostic tests for emergency use during the Covid-19 pandemic. The move should help increase access to quality-assured, accurate tests for the disease. It also means that the tests can now be supplied by the United Nations and other procurement agencies supporting the COVID-19 response.