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COVID-19 Antigen Test kit-Saliva sample Instruction for use Test cassette Saliva collector Product name Test Procedure (i) Rinse the mouth with water.Deep cough three times,spit out saliva from the posterior oropharynx. Open the aluminum foil bag, take out the test cassette and completely immerse the front end of the test cassette in the collected saliva sample,wait 2 minutes. When waiting for the liquid to rise to the c-line position of the window, cover the test cassette and wait for 15 minutes to read the test results, Please note that the result is invalid after 30 minutes. Positive test...