Table 1. Comparison of lipid concentrations in groups: serum samples (group 1), NaF-KOx plasma samples (group 2), NaF-KOx plasma stored for 24 and 48 hours at 2-8°C (groups 3, 4)

Values	Groups	Results
Values	Groups	Cholesterol	Triglyceride	HDL-C	LDL-C
Mean ± SD (mg/dL) (SD: standard deviation)	1 *	209.26 ± 39.94	115.65 ± 61.76	52.71 ± 10.68	133.42 ± 32.88
	2 *	197.06 ± 36.91	107.81 ± 57.21	50.01 ± 10.16	125.46 ± 30.57
	3 *	198.26 ± 37.37	107.90 ± 56.59	49.65 ± 10.20	127.02 ± 31.12
	4 *	197.18 ± 37.21	108.14 ± 56.96	48.90 ± 10.18	126.68 ± 30.78
Mean difference between the 2 groups (mg/dL)	Group 2 vs Group 1	12.2	7.84	2.7	7.96
Average percentage difference between the 2 groups (**) (%)	Group 2 vs Group 1	↓ 5.83 %	↓ 6.77%	↓ 5.12%	↓ 5.96%
	Group 3 vs Group 1	↓ 5.25%	↓ 6.7%	↓ 5.8%	↓ 4.79%
	Group 4 vs Group 1	↓ 5.77 %	↓ 6.49%	↓ 7.22%	↓ 5.05%
P-value	Group 2,3,4 vs Group 1	< 0.001	< 0.001	< 0.001	< 0.001
P-value	Group 3,4	< 0.001	0.614	< 0.001	0.0357

Group 1: serum samples
Group 2: NaF-KOx plasma samples
Group 3: NaF-KOx plasma samples, stored at 2-8°C after 24 hours
Group 4: NaF-KOx plasma samples, stored at 2-8°C after 48 hours
Average percentage difference between the 2 groups: | (Xn-X1)/X1) | x 100%