Necessity for detection of SARS-CoV-2 RNA in multiple types of specimens for the discharge of the patients with COVID-19

Table 1 SARS-CoV-2 RNA in different specimens from COVID-19 patients

Types of specimen	Sample number	ORF1ab and N genes both positive		Only ORF1ab gene positive		Only N gene positive		ORF1ab and N genes both negative
Types of specimen	Sample number	No.	Rate (%)	No.	Rate (%)	No.	Rate (%)	No.	Rate (%)
Nasopharyngeal swab	463	297	64.15	28	6.05	4	0.86	134	28.94
Oropharyngeal swab	39	10	25.64	0	0.00	2	5.13	27	69.23
Sputum	382	61	15.97	37	9.69	11	2.88	273	71.47
BALF	15	7	46.67	3	20.00	0	0.00	5	33.33
Stool	262	32	12.21	7	2.67	1	0.38	230	87.79
Anal swab	98	8	8.16	2	2.04	1	1.02	87	88.78
Urine	135	12	8.89	6	4.44	4	2.96	113	83.70
PDF	1	0	0	0	0	0	0	1	100
Blood	40	3	7.50	1	2.50	1	2.50	35	87.50
Sweat	12	0	0	0	0	0	0	12	100
CSF	2	0	0	0	0	0	0	2	100
Corneal secretion	67	1	1.49	1	1.49	0	0	65	97.02

BALF Broncho alveolar lavage fluid, PDF peritoneal dialysis fluid, CSF cerebrospinal fluid

ISSN: 1479-5876