Table 1.

Pearson’s r correlations and regression slopes indicate the similarity between NMR quantifications and real lipid concentrations for lipid mixtures dissolved in the solvent, CDCl_3.

Lipid Species	External Standard (TSP)			Internal Standard (TMS)
	Pearson’s r	p-value a	Slope	Pearson’s r	p-value a	Slope
Total FA	0.98	0.002	1.3	0.82	0.089	0.8
Saturated FA	0.98	0.002	1.2	0.97	0.006	1.0
ω-3 FA	0.98	0.002	1.0	0.94	0.019	1.8
MUFA	0.98	0.001	1.2	0.93	0.019	2.0
PUFA	0.92	0.03	0.8	0.95	0.015	1.7
UFA	0.94	0.017	0.8	0.95	0.014	1.7
DHA	0.99	0.0001	1.1	0.93	0.024	1.9
Linoleic acid	0.98	0.002	0.9	0.93	0.025	1.7
TC	0.99	0.0003	1.2	0.89	0.04	2.5
FC	0.95	0.011	1.0	0.89	0.04	1.7
CE	0.99	0.00007	0.8	0.98	0.004	1.4
Triglycerides	0.99	0.001	1.2	0.98	0.004	1.0
PC	0.95	0.012	1.2	0.96	0.009	1.2
PE	0.55	0.33	0.1	0.99	0.0001	0.2
SM	0.94	0.018	0.8	0.98	0.002	0.9
Total PL	0.91	0.03	0.9	0.95	0.015	1.0

^a p value of the Pearson test (H0: r = 0); Abbreviations: TSP, 3-(trimethylsilyl)propionic acid sodium salt; TMS, tetramethylsilane; FA, fatty acids; MUFA, monounsaturated fatty acids; PUFA, monounsaturated fatty acids; UFA, unsaturated fatty acids; DHA, docosahexaenoic acid; TC, total cholesterol; FC, free cholesterol; CE, cholesterol ester; PC, phosphatidylcholine; PE, phosphatidylethanolamine; SM, sphingomyelin; PL, phospholipids.