Table 1.

Analytical parameters of the MSPD-HPLC method.

Analyte	Calibration curve	Linear range (µg/mL)	Linearity (r2)	LOD (µg/mL)	LOQ (µg/mL)	Intraday precision (RSD%) (n = 6)	Interday precision (RSD%) (n = 6)
RU	y = 54596x − 1773.8	5–160	0.9997	4.56	13.82	1.29	1.65
QU	y = 53962x − 28420	5–160	0.9998	3.97	12.05	1.68	2.38
CA	y = 53686x − 81042	5–160	0.9998	4.19	12.70	0.97	2.16
KA	y = 54358x − 47122	5–160	0.9996	5.07	15.39	1.52	2.47