Coronavirus tests aren't 100% accurate, but false positives are extremely rare, according to the company that handles COVID-19 tests in Starr County.

Emergency Diagnostic Solutions, the North Carolina-based company that handles COVID-19 testing in Starr County, addressed questions about the tests on Thursday.

The company uses what's called a "RT-PCR" test. That stands for reverse transcription-polymerase chain reaction.

To conduct the test, medical professionals insert a long swab into a person's nose to collect a sample.

That sample is sent to a lab for testing. At the lab, the sample is compared to the virus.

"We report about 15 million tests a year," said Mike Rapacz, a vice president at Emergency Diagnostic Solutions. "And, so, our error rate, you know — we wish we could say we're perfect — but it's about one in a million where we see we're wrong."

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