Fig. 2From: Determination of parecoxib and valdecoxib in rat plasma by UPLC-MS/MS and its application to pharmacokinetics studiesRepresentative chromatograms of PCX, VCX and IS in rats plasma samples. a a blank plasma sample; b a blank plasma sample spiked with PCX, VCX and IS; c a plasma sample from a rat after sublingual vein administration of 5 mg/kg parecoxibBack to article page