Volume 26, Number 8—August 2020
Synopsis
US CDC Real-Time Reverse Transcription PCR Panel for Detection of Severe Acute Respiratory Syndrome Coronavirus 2
Table 8
Test results for 2,923 human specimens determined by the US CDC real-time RT-PCR panel for detection of SARS-CoV-2*
Specimens | Specimens for initial laboratory diagnosis, no. (%) |
Serial follow-up specimens from laboratory-
confirmed positive cases, no. (%) |
|||||||
---|---|---|---|---|---|---|---|---|---|
Positive | Negative | Inconclusive | Total | Positive | Negative | Inconclusive | Total | ||
Upper respiratory tract | |||||||||
NP swab | 42 (3.85) | 1,048 (96.06) | 1 (0.09) | 1,091 (100) | 60 (46.51) | 50 (38.76) | 19 (14.73) | 129 (100) | |
OP swab | 33 (3.09) | 1,035 (96.91) | 0 | 1,068 (100) | 42 (30.00) | 86 (61.43) | 12 (8.57) | 140 (100) | |
Nasal swab/wash |
0 |
7 (100) |
0 |
7 (100) |
0 |
0 |
0 |
0 |
|
Lower respiratory tract | |||||||||
Sputum | 5 (2.79) | 174 (97.21) | 0 | 179 (100) | 13 (72.22) | 3 (16.67) | 2 (11.11) | 18 (100) | |
BAL | 1 (50) | 1 (50) | 0 | 2 (100) | 0 | 0 | 0 | 0 | |
Bronchial wash | 0 | 1 (100) | 0 | 1 (100) | 0 | 0 | 0 | 0 | |
Tissue, lung | 0 | 2 (100) | 0 | 2 (100) | 0 | 0 | 0 | 0 | |
Tracheal aspirate |
0 |
0 |
0 |
0 |
1 (100) |
0 |
0 |
1 (100) |
|
Other | |||||||||
Serum | 0 | 74 (100) | 0 | 74 (100) | 4 (4.88) | 76 (92.68) | 2 (2.44) | 82 (100) | |
Stool | 0 | 0 | 0 | 0 | 22 (40.74) | 28 (51.85) | 4 (7.41) | 54 (100) | |
Urine | 0 | 10 (100) | 0 | 10 (100) | 0 | 62 (100) | 0 | 62 (100) | |
Pleural fluid | 0 | 1 (100) | 0 | 1 (100) | 0 | 0 | 0 | 0 | |
CSF |
0 |
2 (100) |
0 |
2 (100) |
0 |
0 |
0 |
0 |
|
Total | 81 (3.32) | 2,355 (96.64) | 1 (0.04) | 2,437 (100) | 142 (29.22) | 305 (62.76) | 39 (8.02) | 486 (100) |
*BAL, bronchoalveolar lavage; CDC, Centers for Disease Control and Prevention; CSF, cerebrospinal fluid; NP, nasopharyngeal; OP, oropharyngeal; rRT-PCR, real-time reverse transcription PCR; SARS-CoV-2, severe acute respiratory coronavirus 2.