Table 2. Tentative biomarker attribution, loading values, and predictive values for high and poor responders
m/z	Loading	ROC (HR)	ROC (PR)	Adduct	Error (ppm)	Attribution	Formula
533.51975	0.06	0.61	0.75	M+Na+	13	Fatty alcohols	C34H70O2
685.43505	0.05	0.67	0.95	M+NH4+	1	Amino acids, peptides, and analogues	C29H57N5O12
880.7391	0.05	0.61	0.90	M+NH4+	24	Quinone and hydroquinone lipids	C59H90O4
631.3793	0.05	<0.5	0.80	M+Na+	4	Steroidal glycosides	C34H56O9
698.5985	0.05	<0.5	0.80	M+NH4+	16	Quinone and hydroquinone lipids	C48H72O2
522.5934	-0.06	0.54	0.81	M+H+	7	Tertiary amines	C36H75N
698.6051	-0.06	0.78	0.88	M+NH4+	26	Quinone and hydroquinone lipids	C48H72O2
876.79465	-0.05	0.53	0.73	M+NH4+	8	Triradylcglycerols	C55H102O6
880.7497	-0.05	0.57	0.81	M+NH4+	12	Triradylcglycerols	C56H94O6
296.2295	-0.05	0.72	0.94	M+NH4+	25	Methoxyphenols	C17H26O3