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. 2016 Oct 7;31(1):162–168. doi: 10.1007/s12640-016-9672-y

Table 2.

Inter- and intra-day precision in plasma and cerebrospinal fluid samples

Plasma concentration CSF concentration
Added (ng/ml) donepezil C. V.  % Mean ± SEM N Added (ng/ml) donepezil C. V.  % Mean ± SEM N
Inter-day Inter-day
6.25 3.23 6.2 ± 0.2 10 6.25 4.76 6.3 ± 0.3 10
12.5 3.25 12.3 ± 0.4 10 12.5 4.84 12.4 ± 0.6 10
25 3.13 25.6 ± 0.8 10 25 3.54 25.4 ± 0.9 10
50 2.23 49.4 ± 1.1 10 50 3.82 49.7 ± 1.9 10
100 1.73 98.3 ± 1.7 10 100 3.29 100.3 ± 3.3 10
Intra-day Intra-day
6.25 4.76 6.3 ± 0.3 3 6.25 6.45 6.2 ± 0.4 3
12.5 4.84 12.4 ± 0.6 3 12.5 1.60 12.5 ± 0.2 3
25 4.59 26.1 ± 1.2 3 25 3.50 25.7 ± 0.9 3
50 2.18 50.5 ± 1.1 3 50 2.42 49.5 ± 1.2 3
100 2.02 99.1 ± 2.0 3 100 2.57 101.1 ± 2.6 3