Why the discrepancy between the Mila nasal test result and PCR?

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To @Ma leader: in my opinion, this cannot be assumed. PCR testing is a reference test, which does not mean that it is infallible - especially if you have symptoms and subsequent antigen tests give a positive result. According to Mila COVID test documentation, "A positive result may be due to infection with coronavirus strains other than SARS-CoV-2 or other confounding factors." In this way, false positive results can be formed. At the same time, in the section on cross-reactivity, it can be read that human coronaviruses with low pathogenicity 229E, NL63 or OC43, as well as a number of other viral or bacterial pathogens will not affect the results of the study: https://www.gdziepolek.pl/produkty/113578/test-na-koronawirusa-covid-19-antygenowy-z-nosa-mila-sars-cov-2-test/ulotka/268685 In the described situation, I would suggest contacting the local sanitary and epidemiological station in order to consult how this should be done. In my opinion, it may be justified to repeat the PCR test.

Thank you. I did a second antigen test and it's also positive. Recognizing that the PCR test is more reliable, can it be assumed that antigen tests show viruses other than covid, since I am having an infection?