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. 2021 Jan 29;29(5):e287–e293. doi: 10.1097/IPC.0000000000001005

TABLE 3.

PCR Ct Values Days Post Symptom Onset

Pt Test 2 Test 3 Test 4 Add. Tests Total Tests
Result Days Ct 1 Ct 2 Result Ct 1 Ct 2 Result Ct 1 Ct 2
1 38 + 32.5 32.5 3 7
2 + 7 21.8 20.5 + 31.4 31.1 1 5
3 27 2
4 + 20 37.4 40.5 + 32.3 33.3 2 6
5 + 37 25.0 36.8 2
6 + 40 27.3 27.5 3
7 + 46 23.9 24.4 + 32.4 32.8 + 31.8 32.7 3 7
8 + 15 2
9 + 17 36.1 3
10 + 20 29.9 30.0 + 29.2 29.9 3
11 + 21 33.5 34.5 4
12 25 + 0.0 39.8 + 0 40.4 4
13 + 13 28.0 30.5 + 29.2 29.7 1 5
14 + 18 27.3 29.7 2
15 + 10 2
16 + 25 36.1 35.8 4
17 20 + 34.2 34.4 4
18 26 3
19 + 15 26.1 26.4 + 26.1 26.2 5 9
20 10 + 34.7 34.4 2 6
21 + 17 32.3 32.6 + 35.5 34.6 3 7
22 + 4 21.6 23.9 + 37.8 4 8
23 6 4
24 18 2
25 + 29 34.7 35.7 4
26 + 12 28.1 28.1 2
27 + 11 33.4 34.2 4
28 + 11 19.6 N/A 2
29 + 7 2
30 + 6 29.3 N/A N/A N/A 1 5
31 + 4 14.5 N/A + 16.0 N/A + 16.2 N/A 7 11
32 + 5 23.3 N/A + 22.6 22.4 + 28.5 28.3 1 5
33 + 12 32.8 32.7 N/A N/A 4
34 + 3 14.4 N/A 2

Days denotes days after symptom onset. Ct 1 is the Ct value for genome target 1, and Ct 2 is Ct value for target 2. Bold data indicate patients declared ready for discharge based on symptom-based strategy and Ct values lower than 30.

Pt indicates patient; NA, not applicable (QuantStudio 1 target).