. Author manuscript; available in PMC: 2007 Apr 17.

Published in final edited form as: J Mass Spectrom. 2005 Mar;40(3):373–379. doi: 10.1002/jms.795

Table 1.

Limits of Detection (LOD), Limits of Quantification (LOQ) and Correlation Coefficients for the LC-MS-MS Calibration Curves of Ginkgolides and Bilobalide

			Correlation coefficient
Compound	LOD^a fmol (pg) on-column	LOQ^b fmol (pg) on-column	R² (linear)	R² (2nd-order polynomial)
Ginkgolide A	35 (15)	118 (50)	0.9972	1.0000
Ginkgolide B	3.7 (1.3)	11 (4)	0.9956	0.9996
Ginkgolide C	3.6 (1.6)	11 (5)	0.9950	0.9995
Ginkgolide J	120 (50)	350 (150)	0.9971	0.9998
Bilobalide	4.9 (1.6)	15 (5)	0.9995	1.0000

S/N = 3

S/N = 10