Species
Dilution
Sample %
Sample %
Sample %
Variation coefficient >25%
Spike recovery<50%
Spike recovery>200%
Human
(n=933)
1/10
39
8
21
Mice
(n=80)
1/40
35
30
3
Rat
(n=221)
1/20
26
9
11
Table 1:
Proportion of samples (%) presenting a high variation coefficient (>25%) and/or spike recovery out of the acceptable range (<50% or >200%).