. Author manuscript; available in PMC: 2017 Aug 23.

Published in final edited form as: Anal Bioanal Chem. 2016 Oct 28;409(4):931–937. doi: 10.1007/s00216-016-9933-x

Table 4.

Precision, limits of detection (LODs), and upper linearity limits.

Analytes	QCH^*			QCL^*			LOD (ng/mL)	Upper linearity limit (ng/mL)
Analytes	Mean (ng/mL)	Within-run precision (CV%)	Method precision (CV%)	Mean (ng/mL)	Within-run precision (CV%)	Method precision (CV%)	LOD (ng/mL)	Upper linearity limit (ng/mL)
1-OH-NAP	7.78	3.3%	4.8%	1.22	5.9%	7.4%	0.06	200
2-OH-NAP	8.94	3.2%	5.7%	1.54	4.4%	6.2%	0.09	200
2-OH-FLU	1.06	3.8%	5.4%	0.25	4.3%	5.7%	0.008	25
3-OH-FLU	1.14	3.3%	4.8%	0.28	4.2%	5.1%	0.008	10
1-OH-PHE	0.68	7.2%	8.0%	0.17	8.6%	9.7%	0.009	10
Σ2,3-OH-PHE	1.36	6.5%	7.9%	0.36	7.1%	8.2%	0.01	20
4-OH-PHE	0.54	7.0%	10.5%	0.13	9.5%	12.6%	0.007	10
1-OH-PYR	0.79	12.1%	12.4%	0.40	11.4%	13.0%	0.07	10

QCH: QC high; QCL: QC low.