TABLE 5.
Effect of long-term storage at −70°C on HIV RNA in plasma
| Specimen no. | HIV RNA copies (103)/ml of plasma (log10) at moa:
|
||
|---|---|---|---|
| 0 | 5 | 12 | |
| 1 | 0.5 (2.7) | <0.4 (<2.6) | 0.8 (2.9) |
| 2 | 4.2 (3.6) | 2.0 (3.3) | 3.8 (3.6) |
| 3 | 11.5 (4.1) | 9.1 (4.0) | 21.8 (4.3) |
| 4 | 17.6 (4.2) | 10.4 (4.0) | 6.3 (4.2) |
| 5 | 41.5 (4.6) | 15.9 (4.2) | 28.9 (4.5) |
| 6 | 50.8 (4.7) | 41.8 (4.6) | 50.9 (4.7) |
| 7 | 71.9 (4.9) | 22.8 (4.4) | 30.8 (4.5) |
| 8 | 180.6 (5.3) | 46.0 (4.7) | 81.7 (4.9) |
| 9 | 335.5 (5.5) | 355.5 (5.5) | 581.6 (5.8) |
| 10 | 643.0 (5.8) | 74.9 (4.9) | 365.8 (5.6) |
a
P = 0.002 comparing values for time zero and 5 months of storage at −70°C; P = 0.001 comparing values for 5 and 12 months of storage at −70°C; P = 0.80 comparing values for time zero and 12 months of storage at −70°C.