If you do the same test multiple times on the same sample you will generally get the same answer. Even the pcr test isn't 100% accurate.

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No test is 100% accurate.

How accurate is covid-19 testing. That accuracy goes up even more if you have. All it tells you is whether you've been infected at some point in the past, even if that occurred months ago. The analytical accuracy and precision of pathology tests are typically very good.

Scientists assess the accuracy of tests based on: A heart patient who recently came from europe messaged us,. This means it almost never gives a false positive.

It's safe to say that determining the accuracy of a test is complicated. Meaning, if the results are negative, there could still be a chance you have. Detecting variants requires genetic testing done in a lab.

People who have 'false negative' tests. Only sample amounts are taken. A viral test tells you if you have a current infection.

“the tests are very accurate, and correlate very well with p.c.r., when people are most infectious.” using the tests repeatedly — to routinely screen students for the virus, for instance. Because of this, a positive result on a molecular test. Two types of viral tests can be used:

Although tests can perform well in ideal laboratory conditions, in real life lots of other factors affect accuracy including the timing of the test , how the swab was taken , and the handling of the specimen. So why isn’t their diagnostic accuracy the same? And not all positive specimens are tested;

An antibody test (also known as a serology test) might tell you if you had a past infection. Nucleic acid amplification tests (naats) and antigen tests.

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