Table 2 Distribution of results with the first singlicate and the second triplicate testing on the 200 whole blood samples stored at +4°C (WB4) and at−20°C (WB20)
From: Stability of unfrozen whole blood DNA for remote genotypic analysis of HIV-1 coreceptor tropism
First singlicate test | Second triplicate test | No. of cases | % of cases | ||
|---|---|---|---|---|---|
WB4 | WB20 | WB4 | WB20 | ||
Positive | Positive | NA | NA | 133 | 66.5 |
Positive | Negative | NA | Positive | 19 | 9.5 |
Positive | Negative | NA | Negative | 3 | 1.5 |
Negative | Positive | Positive | NA | 16 | 8.0 |
Negative | Positive | Negative | NA | 3 | 1.5 |
Negative | Negative | Positive | Positive | 7 | 3.5 |
Negative | Negative | Positive | Negative | 3 | 1.5 |
Negative | Negative | Negative | Positive | 1 | 0.5 |
Negative | Negative | Negative | Negative | 15 | 7.5 |