What are the differences between the nasal swab and saliva tests for COVID-19?
What are the differences between the nasal swab and saliva tests for COVID-19?
COVID-19Common questionSee full answerWhat are the differences between the nasal swab and saliva tests for COVID-19?Samples for COVID-19 tests may be collected through a long swab that is inserted into the nose and sometimes down to the throat, or from a saliva sample.The saliva test is easier to perform — spitting into a cup versus submitting to a swab — and more comfortable. Because a person can independently spit into a cup, the saliva test does not require interaction with a healthcare worker. This cuts down on the need for masks, gowns, gloves, and other protective equipment, which has been in short supply.Either saliva or swab samples may be used for PCR tests, which detect genetic material from the coronavirus. Swab samples can also be used for antigen tests, which detect specific proteins on the surface of the coronavirus.
When should you do a confirmatory test for COVID-19?
COVID-19Common questionWhen should you do a confirmatory test for COVID-19?Confirmatory testing should take place as soon as possible after the antigen test, and not longer than 48 hours after the initial antigen testing.
What happens if the mouth swab turns red?
Negative Result: If there is a red or pink line in the test area under the drug name, the sample is considered negative for that drug. If a test line appears in the test area for all drugs, then the entire sample is considered negative.