The Influenza and COVID-19 tests (PCR or antigen) looks at respiratory virus genetic material or proteins. It is done for: fever with cough, outbreaks.
General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.
The Influenza and COVID-19 tests (PCR or antigen) looks at respiratory virus genetic material or proteins. It is done for: fever with cough, outbreaks. Why it is done: Fever with cough, outbreaks. generated by SI from cited sources · general information, not a diagnosis · consult a health professional
Sources: SI health summary (own words); MedlinePlus Lab Tests and CDC as references
Fever with cough, outbreaks.
No fasting needed. Laboratory-specific; see the reference range on your report. High or positive may mean: Infection present. Low or negative may mean: Not detected; antigen tests can miss early infection. General information, not a diagnosis. Results must be interpreted by a qualified health worker.
Respiratory virus genetic material or proteins.
Nose or throat swab
Infection present.
Not detected; antigen tests can miss early infection.
Reference ranges vary by lab, age and sex — always use the range printed on your own report.
Consult a doctor to interpret results — a single test does not make a diagnosis.
Uses your location once to list the nearest facilities. Nothing is stored.
What does the Influenza and COVID-19 tests (PCR or antigen) measure?
Respiratory virus genetic material or proteins.
Why is the Influenza and COVID-19 tests (PCR or antigen) done?
Fever with cough, outbreaks.
Do I need to fast for the Influenza and COVID-19 tests (PCR or antigen)?
No fasting needed.
What does a high or positive Influenza and COVID-19 tests (PCR or antigen) mean?
Infection present.
What does a low or negative Influenza and COVID-19 tests (PCR or antigen) mean?
Not detected; antigen tests can miss early infection.
What is the normal range for the Influenza and COVID-19 tests (PCR or antigen)?
Laboratory-specific; see the reference range on your report.
Why is Influenza and COVID-19 tests (PCR or antigen) done?
Fever with cough, outbreaks.
Do I need to prepare or fast for Influenza and COVID-19 tests (PCR or antigen)?
No fasting needed. Laboratory-specific; see the reference range on your report. High or positive may mean: Infection present. Low or negative may mean: Not detected; antigen tests can miss early infection. General information, not a diagnosis. Results must be interpreted by a qualified health worker.
SI text CC BY 4.0; decoder reference data (cited per range); LOINC codes free with attribution (notice included).
Sources: SI health summary (own words); MedlinePlus Lab Tests and CDC as references