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How to use rapid home antigen tests for determining isolation period for COVID

Some practical steps that can be followed for determining isolation period for COVID-19

This assumes that home rapid antigen test kits are available. 

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When to use a home rapid antigen test?

  • Any COVID symptoms (cough, cold, stomach symptoms, fever, breathing difficulty, excessive body ache or fatigue etc.)

  • In case of contact with a COVID positive person 

  • Anyone who has initially tested positive on any COVID test (either on RTPCR or home rapid antigen test)

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For guidance on home care for mild and asymptomatic COVID patients at home - CLICK HERE

Three possible scenarios:

Person has symptoms and COVID test is positive 

  • Isolate and then repeat home rapid test on Day 6 of symptoms

  • If rapid test is negative and symptoms resolve then isolation can end

  • If rapid test is positive on Day 6 then continue isolating till rapid test is negative

Person has symptoms but COVID test negative 

  • Isolate and redo the home rapid test on Day 6 of symptoms

  • If rapid test is again negative and symptoms resolve then isolation can end

  • If rapid test is positive then continue isolating till it is negative

  • If symptoms are concerning & rapid test is repeatedly negative then consider RTPCR

Person does not have any symptoms but COVID test is positive

  • Isolate and redo the rapid test on Day 6. If negative end isolation.

  • If rapid test turns positive – continue isolation till it is negative 

Important 

  • DO NOT use RTPCR test to end isolation.  RTPCR often continues to remain positive for a long time even after infection has resolved. RTPCR is only useful for diagnosing COVID not for determining when to end isolation. 

  • If you do not have home rapid antigen test kit then it is best to isolate for 10 days from start of symptoms or date of initial positive test result - whichever is earlier. 

  • Anyone who tested positive at any point and ends isolation before 12 days should continue diligent masking and limit interactions with others till day 12​

  • Even a faint double line on the home rapid antigen test is a positive test. Please read the test result within the time window given in instruction leaflet. Do not rush. 

  • Read instructions for your test kit carefully before using. Instructions vary for each brand. 

  • The instruction leaflet with the test kit clearly indicates how to interpret test result on your own without needing external help. 

  • List of ICMR approved home rapid test kits with links to videos on how to use (test kits are available for purchase online and in stores) – https://www.icmr.gov.in/pdf/covid/kits/COVID_Home_Test_Kit_23112021.pdf 

  • Disclaimer – This tip sheet is meant to be educational & suggestive and is not a substitute for medical advice. The isolation guidelines in your country, state or institution may vary from this. Please follow what is locally advisable. 

  • We regret that this guidance is currently available only in English. If anyone wishes to translate this into their local languages please get in touch with us. Thanks. 

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  • Credits. Dr. Sonali Vaid, Dr. Ankur Sooden, Dr. CS Pramesh, Dr. Shivangi Shankar

  • Last Updated. 5th Jan 2022

  • Please email incluvelabs@gmail.com for any feedback or questions

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