Concerns have been raised over the results of some PCR tests conducted in Sri Lanka with some results showing positive but later turning out to be negative.
A number of incidents have been reported where patients test positive for the coronavirus but a PCR test done a day or two later shows the patient is negative.
Chairman of the Association of Medical Laboratory Technologists Ravi Kumudesh told reporters that a patient who tested positive for the virus can test negative only after around 14 days.
He said that there is an issue with the lab tests if a patient who tested positive for the virus today tests negative the next day. (Colombo Gazette)