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PETALING JAYA: There are two known popular Covid-19 tests available and used by the health authorities worldwide to detect the virus. The two tests – reverse transcription polymerase chain reaction (RT-PCR) and antigen rapid test kit (RTK-Ag) – require nasal or throat swab samples. RT-PCR is considered the gold standard in diagnosing the Covid-19 virus. It can detect if an individual has an active Covid-19 infection and the test has typically high sensitivity rates, though this also means the sample has to be carefully prepared to avoid contamination. RT-PCR is a molecular test that is ab...

KUALA LUMPUR (Bernama): The Covid-19 Antigen Rapid Test Kit (RTK-Ag) should be conducted by a trained operator, says Tan Sri Dr Noor Hisham Abdullah. The Health director-general said the RTK-Ag should also be performed within the first five to seven days following the onset of symptoms for best results. “More specific for a new cluster with a high positivity rate and when concordance study shows positive predictive value, high specificity. “RTK-Ag testing confirmatory is recommended when the health system is overburdened. Test kits sensitivity (for RTK-Ag) must be more than 80% and specif...