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The Bavarian state government has the security of corona rapid tests checked.

"In the district of Wunsiedel in Franconia, a comparative study with a current total of 968 test persons was carried out on the detection of Sars-CoV-2 as part of a pilot project," says the preliminary evaluation that is available to WELT AM SONNTAG.

The Roche rapid test was compared with the so-called gold standard, the PCR test.

The result: If you evaluate the results of this pilot project to the same extent as was done in the manufacturer's study, then the rapid antigen test results in a sensitivity of 70.21 and a specificity of 99.77 percent.

"This means that 29.79 percent of all Sars-CoV-2-positive individuals are not classified as positive by the rapid antigen test and are therefore falsely considered negative." That means: the infection was detected in just 70 percent of the cases.

The result is explosive because it became known at the beginning of the week that Federal Health Minister Jens Spahn is thinking about allowing rapid tests for private use as well.

In response to a request from WELT AM SONNTAG, Bavaria's Ministry of Health announced: “The evaluation of the tests in the Wunsiedel district has not yet been fully completed.

The pilot project is still running.

We don't want to comment on the results until the project is finished. "

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The state government is aware, however, that the sensitivity of the rapid antigen tests is in part below that of the PCR tests.

The use of rapid antigen tests is therefore mainly advocated where no tests would otherwise take place in order to create additional security.

"The currently available rapid tests are not suitable for use in the private sector because they have to be carried out by instructed persons," said a ministry spokesman.

A “free ticket” cannot be a negative result

When asked whether Bavaria would also examine corona rapid tests from other manufacturers, the Bavarians referred to ongoing investigations at other locations.

"These are important to validate the practicality of the tests," said the ministry spokesman.

Bavaria supports that.

The nationwide research network for applied surveillance and testing B-Fast writes: “The diagnostic sensitivity of the rapid antigen tests is limited.” A negative result cannot be a “free ticket”: All hygiene measures must be observed.

This is particularly true in risk areas.

The B-Fast therefore requires that rapid antigen tests are only carried out and evaluated under or under the guidance of professionally trained medical personnel.

This text is from WELT AM SONNTAG.

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Source: Welt am Sonntag