Table 2.
Comparison of absolute T-cell counts (cells/μL) determined in aging specimens stored at room temperature or at 4°C.
| For specimens stored at room temperature | |||||
|---|---|---|---|---|---|
|
| |||||
| CD4 subset | CD8 subset | ||||
| 24 hrs | 390 (219-534)a | 24 hrs | 1142 (808-1446) | ||
| 72 hrs | 438 (246-597) | p < 0.005b | 72 hrs | 1140 (800-1514) | p = 0.49 |
| 96 hrs | 436 (246-580) | p < 0.005 | 96 hrs | 1159 (822-1509) | p = 0.03 |
|
| |||||
| For specimens stored at 4°C | |||||
|
| |||||
| CD4 subset | CD8 subset | ||||
|
| |||||
| 24 hrs (RT) | 422 (202-561) | 24 hrs (RT) | 867 (556-1305) | ||
| 24 hrs (4°C) | 400 (205-530) | p < 0.005 | 24 hrs (4°C) | 867 (541-1365) | p = 0.24 |
| 48 hrs (4°C) | 403 (204-528) | p = 0.02 | 48 hrs (4°C) | 890 (566-1421) | p < 0.005 |
| 72 hrs (4°C) | 396 (204-547) | p < 0.005 | 72 hrs (4°C) | 849 (568-1434) | p < 0.005 |
a
median (interquartile range);
b
Wilcoxon signed rank test (vs. baseline values)