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Effect of centrifugation at 3,500 × g on DNA recovery (as indicated by mean Cq values) from spiked serum and plasma specimensa
| Material | Mean Cq value (cycles) at center: |
|
|---|---|---|
| 1 | 2 | |
| Plasma centrifuged | 47.1 | 37.8 |
| Plasma noncentrifuged | 46.9 | 37.6 |
| Serum centrifuged | 46.1 | 37.2 |
| Serum noncentrifuged | 47.2 | 37.0 |
The two centers revealed no significant differences in Cq values between centrifuged and noncentrifuged plasma and serum samples, respectively (P > 0.05).
