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Table 2 Concentration levels of the kidney injury markers in serum and urine samples at different time points at 95% confidence interval

From: Biological variation in the serum and urine kidney injury markers of a healthy population measured within 24 hours

Items

Groups

0:00

4:00

8:00

12:00

16:00

20:00

P-value

S-CREA, umol/L

All

68.00(61.66-74.34)

68.73(62.92-74.53)

69.13(62.95-75.31)

67.35(58.88-75.83)

71.9(65.14-78.67)

69.69(63.30-76.09)

0.961

Male

81.94(77.15-86.74)

81.79(77.88-85.71)

82.82(78.88-86.76)

84.82(78.41-91.24)

87.05(82.82-91.29)

84.00(79.94-88.06)

0.774

Female

51.07(46.98-55.16)

52.86(49.18-56.53)

52.50(47.69-57.31)

46.14(38.20-54.09)

53.50(48.54-58.46)

52.32(47.66-56.98)

0.624

S-β2MG, ug

/L

All

1.82(1.65-1.99)

1.97(1.81-2.12)

1.87(1.72-2.02)

1.77(1.57-1.97)

1.76(1.61-1.91)

1.82(1.66-1.97)

0.391

Male

2.01(1.75-2.27)

2.13(1.90-2.36)

2.04(1.81-2.27)

2.04(1.80-2.29)

1.94(1.72-2.17)

2.02(1.82-2.23)

0.770

Female

1.59(1.44-1.73)

1.76(1.63-1.90)

1.66(1.54-1.78)

1.44(1.20-1.68)

1.54(1.41-1.68)

1.56(1.39-1.73)

0.160

S-CYSC, mg/L

All

0.90(0.85-0.95)

0.93(0.89-0.98)

0.89(0.84-0.94)

0.85(0.78-0.93)

0.90(0.84-0.95)

0.92(0.87-0.98)

0.694

Male

0.98(0.91-1.05)

1.00(0.94-1.05)

0.98(0.93-1.03)

0.97(0.92-1.03)

1.00(0.94-1.06)

1.03(0.97-1.09)

0.744

Female

0.80(0.76-0.85)

0.85(0.81-0.90)

0.78(0.71-0.86)

0.71(0.59-0.83)

0.77(0.72-0.82)

0.79(0.75-0.83)

0.157

S-NGAL, mol/L

All

82.69(67.81-97.58)

84.50(71.83-97.17)

92.77(79.43-106.12)

85.26(74.13-96.38)

84.06(73.98-94.15)

90.63(72.48-108.78)

0.621

Male

93.29(68.04-118.55)

94.59(73.47-115.70)

96.44(79.10-113.78)

96.21(81.44-110.97)

93.62(77.55-109.68)

107.82(77.25-138.40)

0.803

Female

69.82(60.36-79.28)

72.25(63.69-80.81)

88.32(67.12-109.53)

71.96(57.42-86.50)

72.46(64.62-80.31)

69.75(62.59-76.91)

0.618

u-CREA, umol/L

All

9430.92(7587.99-11273.85)

9425.18(7042.76-11807.60)

13032.95(11101.06-14964.84)

14084.71(8782.35-19387.06)

8998.60(7131.55-10865.64)

10153.74(7908.49-12398.99)

0.082

Male

9966.59(7364.86-12568.32)

11798.23(8620.03-14976.44)

13208.53(11132.61-15284.45)

17793.56(9253.33-26333.79)

8570.53(6087.73-11053.33)

11463.03(8048.62-14877.44)

0.141

Female

8780.46(6132.66-11428.27)

6543.61(3472.29-9614.93)

12819.75(9269.24-16370.26)

9581.11(4709.48-14452.73)

9518.39(6610.78-12426.01)

8563.89(5922.95-11204.83)

0.112

u-β2MG, ug

/L

All

0.10(0.05-0.14)

0.11(0.05-0.16)

0.12(0.07-0.18)

0.12(0.05-0.19)

0.10(0.04-0.17)

0.10(0.06-0.13)

0.650

Male

0.12(0.04-0.20)

0.14(0.04-0.24)

0.15(0.05-0.25)

0.18(0.07-0.30)

0.13(0.01-0.25)

0.12(0.06-0.18)

0.700

Female

0.07(0.05-0.09)

0.07(0.05-0.09)

0.09(0.06-0.13)

0.05(0.03-0.07)

0.07(0.04-0.10)

0.07(0.06-0.089)

0.281

u-CYSC, mg/L

All

0.04(0.03-0.05)

0.04(0.03-0.06)

0.06(0.04-0.07)

0.04(0.03-0.05)

0.04(0.02-0.05)

0.04(0.03-0.056)

0.493

Male

0.03(0.02-0.04)

0.04(0.02-0.05)

0.04(0.03-0.05)

0.04(0.02-0.05)

0.02(0.01-0.04)

0.03(0.02-0.05)

0.601

Female

0.05(0.04-0.07)

0.05(0.02-0.08)

0.08(0.05-0.11)

0.04(0.02-0.07)

0.05(0.03-0.08)

0.06(0.04-0.08)

0.331

u-NGAL, mol/L

All

26.71(18.03-35.39)

38.02(25.13-50.90)

31.42(20.28-42.56)

30.32(20.99-39.66)

32.18(22.13-42.23)

36.32(22.31-50.34)

0.887

Male

29.35(16.70-42.00)

19.53(13.39-25.67)

19.62(11.61-27.62)

28.23(16.40-40.07)

34.38(17.30-51.46)

36.15(20.33-51.96)

0.395

Female

23.50(11.65-35.35)

60.46(37.66-83.27)

45.75(25.08-66.42)

32.86(17.60-48.11)

29.50(20.78-38.22)

36.54(11.43-61.64)

0.080