Fig. 4

Effects of different swab types on RT-qPCR and RT-LAMP results with isolated RNA. 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. RNA was extracted and purified before being analysed for SARS-CoV-2 in RT-qPCR (Siemens Kit) targeting Orf1a (a) and RT-LAMP targeting ORF8 (b) and N (c)