Table V.

Criteria Used for Data Filtering and Response Correction—Retention Time tR, m/z Thresholds and Response Factors for Each IndividualLC

Lipid class	Start tR (min)	End tR (min)	Lower m/z threshold	Upper m/z threshold	RF
CE	0.56	0.82	550	700	1.7
TG	0.82	1.18	710	1081	0.29
DG	1.18	1.55	450	741	0.35
FC	1.36	1.39	369.35	369.4	72.64
MG	1.6	1.86	280	430	1.25
CER	2.02	2.13	460	764	0.32
HexCer	3.02	3.13	623	864	0.56
HexCer(OH)	3.26	3.3	665	894	10.56
PG	3.60	3.75	667	914	41.77
PE	3.89	4.03	580	900	3.59
LPE	4.39	4.45	397	590	23.69
PC	4.76	4.83	620	980	1
SM	4.91	5.05	625	870	1.98
LPC	5.00	5.25	410	610	4.4

¹The same RF as for HexCer.