Validation of the Analytical Method. The validation of
the proposed chromatographic method was assessed by several
analytical parameters. For determination of the bioactive
markers, a calibration curve for each marker was constructed
and tested three times for linearity. As shown in Table 6, good
linearity and high sensitivity under the optimal chromatographic
conditions were obtained with correlation coefficients
>0.999 and relatively low LOD (0.37−0.45 ng) and LOQ
(1.25−1.51 ng).