IN-DEPTH TESTS COMPARISON


Testing requirements for work and travel vary significantly. CHL provides three different types of tests to address the most common asymptomatic COVID-19 testing needs:

  PCR (Polymerase Chain Reaction) Test Rapid Antigen Test Antibody (serology) Test
Why get tested? To meet testing requirements for work, school, travel, entry to events (determined by local policies).

To provide peace-of-mind you are not currently infected with COVID-19.
To meet testing requirements for work, school, travel, entry to events (determined by local policies).

To provide peace-of-mind it’s unlikely you’re infected with COVID-19.
To determine if you have COVID-19 antibodies.

To track your COVID-19 antibody levels over time.
Test purposes To screen for active COVID-19 infections.

Not for determining if one previously had COVID-19 or currently has antibodies for the virus.

CHL does not test individuals experiencing COVID-19 symptoms. Please go to an Ontario Public Health COVID-19 assessment centre (links to Ontario COVID-19 assessment centre listing) immediately.
To screen for active COVID-19 infections.

Not for determining if one previously had COVID-19 or currently has antibodies for the virus.

CHL does not test individuals experiencing COVID-19 symptoms. Please go to an Ontario Public Health COVID-19 assessment centre (links to Ontario COVID-19 assessment centre listing) immediately.
To determine if you currently have antibodies due to a previous COVID-19 infection or vaccination.

Not for determining if an individual currently has a COVID-19 infection.
Accuracy Highly accurate, and the best available for COVID-19 screening purposes. Lower accuracy than PCR tests, but can be a cost-effective tool for frequent screening of a testing population. Not applicable, as antibody testing does not screen for active infections.
Typical results turnaround time 1 day or more

CHL is 12-18 hours
15-30 minutes 1-3 days
Sample collection method Oral and nasal swab, or saliva Nasal swab Finger prick for blood sample
PCR (Polymerase Chain Reaction) Test
Why get tested? To meet testing requirements for work, school, travel, entry to events (determined by local policies).

To provide peace-of-mind you are not currently infected with COVID-19.
Test purposes To screen for active COVID-19 infections.

Not for determining if one previously had COVID-19 or currently has antibodies for the virus.

CHL does not test individuals experiencing COVID-19 symptoms. Please go to an Ontario Public Health COVID-19 assessment centre (links to Ontario COVID-19 assessment centre listing) immediately.
Accuracy Highly accurate, and the best available for COVID-19 screening purposes.
Typical results turnaround time 1 day or more

CHL is 12-18 hours
Sample collection method Oral and nasal swab, or saliva
Rapid Antigen Test
Why get tested? To meet testing requirements for work, school, travel, entry to events (determined by local policies).

To provide peace-of-mind it’s unlikely you’re infected with COVID-19.
Test purposes To screen for active COVID-19 infections.

Not for determining if one previously had COVID-19 or currently has antibodies for the virus.

CHL does not test individuals experiencing COVID-19 symptoms. Please go to an Ontario Public Health COVID-19 assessment centre (links to Ontario COVID-19 assessment centre listing) immediately.
Accuracy Lower accuracy than PCR tests, but can be a cost-effective tool for frequent screening of a testing population.
Typical results turnaround time 15-30 minutes
Sample collection method Nasal swab
Antibody (serology) Test
Why get tested? To determine if you have COVID-19 antibodies.

To track your COVID-19 antibody levels over time.
Test purposes To determine if you currently have antibodies due to a previous COVID-19 infection or vaccination.

Not for determining if an individual currently has a COVID-19 infection
Accuracy Not applicable, as antibody testing does not screen for active infections.
Typical results turnaround time 1-3 days
Sample collection method Finger prick for blood sample