While PCR tests are still available and remain the “gold standard” for testing, many have turned to rapid antigen tests (RATs), RNZ reports. But with these benefits come a range of limitations: the biggest one being that they can provide false negative or false positive results. Meanwhile, the makers of RATs have hit back, blaming false negatives on a lack of education about how and when to properly use the tests. So here is an illustrated, step-by-step guide on how to correctly take a RAT.

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