COVID-19 Rapid Antigen Tests for Self-Testing
What are COVID-19 Rapid Antigen Tests?
COVID-19 rapid antigen tests, also known as lateral flow tests or LFTs, are a quick and easy way to screen for COVID-19 on your own.
How do Rapid Antigen Tests Work?
Rapid antigen tests detect the presence of SARS-CoV-2 viral proteins, known as antigens, in nasal swabs or other respiratory secretions.
If the test detects antigens, it will display a positive result within minutes.
Why Use Rapid Antigen Tests?
Rapid antigen tests are a valuable tool for:
- Screening for COVID-19, especially in asymptomatic individuals.
- Confirming a diagnosis of COVID-19, especially in symptomatic individuals.
- Monitoring the spread of COVID-19 in communities.
Accuracy of Rapid Antigen Tests
Rapid antigen tests are generally accurate, but it's important to note that they can have false positives and false negatives.
False positives are rare, but they can occur in individuals who have recently received a COVID-19 vaccine or who have underlying respiratory conditions.
False negatives are more common, especially in individuals who are asymptomatic or who have a low viral load.
When to Use Rapid Antigen Tests
Rapid antigen tests are most useful when used in conjunction with other screening and diagnostic methods, such as:
- PCR tests, which are more sensitive but take longer to process.
- Symptom monitoring, as rapid antigen tests can help confirm a diagnosis of COVID-19 in symptomatic individuals.
How to Use Rapid Antigen Tests
Rapid antigen tests are typically performed at home using a nasal swab. Follow the manufacturer's instructions carefully for specific steps.
Once the test is complete, interpret the results according to the manufacturer's instructions.
If you receive a positive result, isolate yourself and contact your healthcare provider for further instructions.
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