Yijin-Tang Attenuates Cigarette Smoke and Lipopolysaccharide-Induced Chronic Obstructive Pulmonary Disease in Mice

Table 2

Linear range, regression equation, r², LODs, and LOQs for marker analytes (n = 3).

Analyte	Linear range (μg/mL)	Regression equation^a (y = ax + b)	r^2	LOD^b (μg/mL)	LOQ^c (μg/mL)
Liquiritin apioside	0.47–30.00	y = 13919.31x + 1750.37	0.9999	0.09	0.28
Liquiritin	0.47–30.00	y = 23478.34x + 2764.20	1.0000	0.07	0.23
Narirutin	0.78–50.00	y = 16945.14x + 3555.47	1.0000	0.13	0.40
Hesperidin	0.78–50.00	y = 16439.25x + 2890.32	1.0000	0.09	0.26
Glycyrrhizin	0.47–30.00	y = 7344.40x + 533.61	1.0000	0.03	0.09
6-Gingerol	0.47–30.00	y = 6451.07x + 686.49	1.0000	0.03	0.09

^ay: peak area (mAU) of each analyte; x: concentration (μg/mL) of each analyte. ^bLOD = 3.3 × σ/S. ^cLOQ = 10 × σ/S (where σ is the standard deviation of the y-intercept, and S is the slope of the calibration curve).