SARS-CoV-2 Ag/ Antigen/ (Ag, qualitative) in nasopharyngeal swab

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You don't need to be starving. You can consume food and liquids before the test, but it is recommended that before the collection (at least 2 hours) you avoid: brushing your teeth, eating food, drinks (especially acidic juices, alcohol, coffee), smoking, chewing gum or menthol candies.