Table 2. The differential metabolites between Nor and HA.

No.	Metabolite	Retention Time (min)	VIP	FC	P value	ROC	Up/Down
1	Decanoylcarnitine	11.72	5.28	1.71	6.88E-06	0.85	up
2	Monoolein	15.06	5.23	3.61	3.42E-17	1	up
3	Indole-3-acetic acid	9.57	3.90	0.5	5.96E-05	0.85	down
4	2-Mercaptobenzothiazole	11.27	2.98	8.33	2.11E-20	1	up
5	PC (18:5e/2:0)	14.22	2.76	0.54	6.81E-05	0.83	down
6	Adenosine	2.64	2.34	0.01	7.06E-25	1	down
7	Melatonin	9.81	1.95	333.48	6.78E-06	0.81	up
8	PC (15:0/15:0)	16.17	1.65	0.58	6.13E-09	0.94	down
9	PE (16:1e/22:5)	16.29	1.58	0.62	2.29E-04	0.83	down
10	Tetrahydrocorticosterone	12.53	1.50	1.66	1.47E-05	0.82	up
11	Inosine	3.09	1.16	0.19	3.09E-19	1	down
12	5-OxoETE	13.87	1.10	1.53	1.22E-03	0.77	up
13	2-Arachidonoyl glycerol	14.97	1.07	1.59	1.20E-04	0.84	up