COVID-19 PCR Testing
What is a PCR Test?
PCR (Polymerase Chain Reaction) is a technique used to amplify small segments of DNA or RNA. For COVID-19:
The test detects viral RNA (genetic material).
It is considered the "gold standard" for accuracy in COVID-19 diagnosis.
How It Works
Sample Collection: A swab is inserted into the nose or throat to collect mucus.
Laboratory Analysis: The sample is sent to a lab where:
Viral RNA is extracted.
It is then converted into DNA.
PCR amplifies the DNA to detectable levels.
Results: Typically available within 1–3 days, though rapid PCR tests can yield results in a few hours.
When to Get a PCR Test
You have symptoms of COVID-19 (fever, cough, fatigue, etc.).
You've been exposed to someone who tested positive.
You're required to test for travel, work, school, or medical procedures.
You're part of a screening program or have been in a high-risk setting.
Advantages
High accuracy (especially compared to rapid antigen tests).
Detects virus even in early or asymptomatic stages.
Limitations
Requires lab processing (unless it's a rapid PCR).
May remain positive for weeks after recovery, detecting non-infectious viral fragments.
What is a PCR Test?
PCR (Polymerase Chain Reaction) is a technique used to amplify small segments of DNA or RNA. For COVID-19:
The test detects viral RNA (genetic material).
It is considered the "gold standard" for accuracy in COVID-19 diagnosis.
How It Works
Sample Collection: A swab is inserted into the nose or throat to collect mucus.
Laboratory Analysis: The sample is sent to a lab where:
Viral RNA is extracted.
It is then converted into DNA.
PCR amplifies the DNA to detectable levels.
Results: Typically available within 1–3 days, though rapid PCR tests can yield results in a few hours.
When to Get a PCR Test
You have symptoms of COVID-19 (fever, cough, fatigue, etc.).
You've been exposed to someone who tested positive.
You're required to test for travel, work, school, or medical procedures.
You're part of a screening program or have been in a high-risk setting.
Advantages
High accuracy (especially compared to rapid antigen tests).
Detects virus even in early or asymptomatic stages.
Limitations
Requires lab processing (unless it's a rapid PCR).
May remain positive for weeks after recovery, detecting non-infectious viral fragments.
What is a PCR Test?
PCR (Polymerase Chain Reaction) is a technique used to amplify small segments of DNA or RNA. For COVID-19:
The test detects viral RNA (genetic material).
It is considered the "gold standard" for accuracy in COVID-19 diagnosis.
How It Works
Sample Collection: A swab is inserted into the nose or throat to collect mucus.
Laboratory Analysis: The sample is sent to a lab where:
Viral RNA is extracted.
It is then converted into DNA.
PCR amplifies the DNA to detectable levels.
Results: Typically available within 1–3 days, though rapid PCR tests can yield results in a few hours.
When to Get a PCR Test
You have symptoms of COVID-19 (fever, cough, fatigue, etc.).
You've been exposed to someone who tested positive.
You're required to test for travel, work, school, or medical procedures.
You're part of a screening program or have been in a high-risk setting.
Advantages
High accuracy (especially compared to rapid antigen tests).
Detects virus even in early or asymptomatic stages.
Limitations
Requires lab processing (unless it's a rapid PCR).
May remain positive for weeks after recovery, detecting non-infectious viral fragments.