Good to knowOne result rarely tells the whole story. Your provider looks at your results together with your symptoms, exam, and other tests.
What the test is
Home antigen tests are fast but can miss early infections; testing again 48 hours later improves accuracy. PCR tests are more sensitive.
Why it's done
- Fever, cough, sore throat, body aches, or loss of taste or smell
- After an exposure
- Before visiting people at high risk
Getting ready and what happens
- Follow the kit instructions exactly.
How the test is done
- A swab is placed in the nose or throat.
What the results mean
Positive
You likely have the infection. People at high risk should ask about antivirals right away; they work best when started early.
Negative
Retest in 48 hours if you have symptoms.
When a result needs quick action
Call 911Trouble breathing, chest pain, confusion, bluish lips, or oxygen below 92% on a home monitor
Questions to ask your provider
- What do my results mean for me?
- Do I need to repeat this test or have other tests?
- Should I take an antiviral?
- How long should I stay home?
Related conditions
Related medicines
Sources
Last updated 2026-11-13.