Fig. 3

Suitability of different swab types available for direct SARS-CoV-2 detection in RT-LAMP. Seven of the most commonly used swab types were used to test one SARS-CoV-2 negative person. 10 µL of heat-inactivated virus was added to each swab type. Samples were heated to 90 °C for 5 min before their addition to RT-LAMP reaction detecting ORF8 (a) and N (b). All experiments were performed three times in triplicates. The Amplification plots show representative amplification curves for nine measurements per sample