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. 2012 May 4;33(5):710–716. doi: 10.1038/aps.2012.8

Table 3. The nonspecific adsorption of ketoprofen and mexiletine with ultrafilter (n=3).

Drug Spiked amount (μg/mL) P (%) P (%)
Ketoprofen 1.0 3.77 3.53±0.50
  5.0 3.86  
  50.0 2.95  
Mexiletine 0.5 2.25 2.63±1.57
  5.0 1.28  
  50.0 4.36