. 2014 Dec 22;2014:409089. doi: 10.1155/2014/409089

Table 2.

Precision, calibration parameters, and sensitivity of the determination of GCA and BCA by HPLC.

Compound	Repeatability (%)		Calibration			LOQ^d (µM)	LOD^e (µM)
Compound	Intraday^a	Interday^b	Regression equation	r ²	Linear range^c (µM)	LOQ^d (µM)	LOD^e (µM)
GCA	0.28	2.76	y = 33.52x + 0.0877	0.9998	0.50–200	0.50	0.15
BCA	0.31	3.08	y = 33.25x + 0.0971	0.9997	0.50–200	0.50	0.15

^aRSD of peak area based on 8 runs of a solution of the standard over 1 day.

^bRSD of peak area based on 8 runs of a solution of the standard on independent days.

^cConcentration range between the limit of quantification and the upper linear limit.

^dLimit of quantification: signal/noise ratio = 10.

^eLimit of detection: signal/noise ratio = 3.

y = concentration (µM).

x = peak area analyte/peak area internal standard.