A fluid sample is collected by inserting a long nasal swab (nasopharyngeal swab) into your nostril and taking fluid from the back of your nose or by using a shorter nasal swab (mid-turbinate swab) to get a sample. PCR tests are very accurate when properly performed by a health care professional, but the rapid test can miss some cases..

When you get your results:

• Negative result.This means that you likely weren’t infected with the COVID-19 virus. But a false-negative test result could happen depending on the timing and quality of the test sample.

Even if you test negative, you could become infected in the future, so it’s important to follow guidelines for social distancing, face mask use and hand-washing to avoid potential spread. Your doctor may recommend repeat testing if you continue to have symptoms.

• Positive result.This means you currently have an active infection with the virus that causes COVID-19. Take appropriate steps to care for yourself and avoid spreading the virus to others. You’ll need to self-isolate until: Your symptoms are improving, and it’s been 24 hours since you’ve had a fever, and at least 10 days have passed since your symptoms first appeared.

If you have severe symptoms of COVID-19 or a health condition that lowers your ability to fight disease, your doctor may recommend that you stay in isolation longer. If you have a positive result but never developed symptoms, isolate for 10 days after the test.