Concentration spiked (µg/L) Flucloxacillin (Mean ± SD%) Cefazolin (Mean ± SD%)
Plasma
0.20 96.4 ± 9.7 97.2 ± 4.5
2.00 97.9 ± 8.7 96.5 ± 5.4
20.0 111 ± 6.8 101.5 ± 1.9
100 104 ± 8.6 99.1 ± 2.9
Plasma ultrafiltrate
0.005 99.6 ± 4.8 96.6 ± 2.7
0.01 95.4 ± 7.1 97.2 ± 8.8
0.10 102 ± 7.1 93.7 ± 6.5
1.00 95.9 ± 6.9 101 ± 10.1
10.0 98.0 ± 5.1 101 ± 4.6
Table 5: Matrix effect data for flucloxacillin and cefazolin (n = 6, from six different sources).
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