5 Things to Avoid (2 hours before the COVID-19 test)

 In News

There are different ways of Covid-19 #testing, but the #RapidAntigenTest is the most used recently. When we do the test by ourselves, apart from following the procedure, you may also want to avoid doing these 5 things about 2 hours prior to the test – so it doesn’t affect the #accuracy of the test result.

?Reminder, #PCR (Nucleaic Acid)Test results are more accurate than rapid antigen test. If you are concerned about the accuracy, please conduct #PCR (Nucleaic Acid)Test at the testing centres. #INSTA is also serving at testing centres in many districts to provide #Covid19TestingServices.


  1. Avoid eating

To reduce the incidence of nausea or vomiting during specimen collection.


  1. Avoid drinking water

Drinking water may dilute the virus concentration in the throat, so it would affect the testing accuracy.


  1. Avoid brushing your teeth or using mouthwash

You should avoid doing these 1 to 2 hours prior to the test, as the virus may be damaged by it.


  1. Avoid smoking, alcohol drinking or chewing gum

The disinfectant effect of the chemicals or alcohol in it will remain in the mouth, affecting the accuracy of the test results.


  1. Avoid nasal irrigation

If the test is to collect nasal samples, avoid nasal irrigation within 1 to 2 hours before the test, so it won’t affect the accuracy of the test results due to the reduction of the virus concentration.


#Source – Hong Kong Red Cross

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