TABLE 5

Effect of centrifugation at 3,500 × g on DNA recovery (as indicated by mean Cq values) from spiked serum and plasma specimensa

MaterialMean Cq value (cycles) at center:
12
Plasma centrifuged47.137.8
Plasma noncentrifuged46.937.6
Serum centrifuged46.137.2
Serum noncentrifuged47.237.0
  • a The two centers revealed no significant differences in Cq values between centrifuged and noncentrifuged plasma and serum samples, respectively (P > 0.05).