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RTK-Ag(Saliva) vs RTK-Ag(Swab test)

Answered by: Dr Sri Viknarajan

Last Updated: September 20, 2021 5:47 PM
Anonymous 26 days

Hi Doctor,

What is a different Rapid Test Kit Antigen for RTK-Ag(Swab test) and RTK-Ag(Self test-Saliva)?

Which one more accurate, either RTK-Ag(Swab test) or RTK-Ag(Saliva)?

Thank you.

Dr Sri Viknarajan 26 days
General Practitioner

Thank you for contacting us regarding your query.

Both swab and saliva self test kits have the same function, which is to detect the antigens ( a type of protein found on viral surfaces). The major difference between these 2 tests is the type of sample used. RTK-Ag swab test uses samples from the nose while the self-test kit uses saliva. Both these tests produce fast results, hence why they are used as screening tests for Covid-19. Both of these tests have about the same accuracy to detect Covid-19 antigens. A more accurate test would be RT-PCR which generally take a longer time to show results and is done if either RTK-Ag swab or saliva test comes out positive.

We hope that this answer has been helpful! Feel free to reach out to our doctors online if you have further questions.
Thank you.

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Last Updated: Mon Sep 20 2021 17:47:03 GMT+0800 (Malaysia Time)
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