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Comparison of measurements of CD4 and CD8 absolute counts and percentages in aging specimens at room temperature or refrigerated.
| Protocol precision at room temperature (mean %CV) | |||||
|---|---|---|---|---|---|
|
| |||||
| T cells | n | CD4 abs | CD8 abs | CD4% | CD8% |
| All | 52 | 6.3 | 2.5 | 6.4 | 2.0 |
| CD4≤300/μL | 20 | 7.3 | 2.4 | 7.3 | 1.8 |
| CD4>300/μL | 32 | 5.6 | 2.6 | 5.8 | 2.2 |
|
| |||||
| Protocol precision at 4°C (mean %CV) | |||||
|
| |||||
| T cells | n | CD4 abs | CD8 abs | CD4% | CD8% |
| All | 34 | 4.6 | 2.6 | 3.5 | 1.9 |
| CD4≤300/μL | 12 | 5.8 | 3.0 | 4.8 | 2.1 |
| CD4>300/μL | 22 | 3.9 | 2.4 | 2.9 | 1.8 |
