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Table 2 Laboratory data according to tertiles of mean rCUC

From: Positive association of residual kidney function with hemoglobin level in patients on peritoneal dialysis independent of endogenous erythropoietin concentration

 

Total (N = 50)

T1 (mean rCUC < 11.7 L/week/1.73m2), n = 17

T2 (mean rCUC 11.8–29.8 L/week/1.73m2), n = 17

T3 (mean rCUC ≥ 29.9 L/week/1.73m2), n = 16

P for trend

Total protein, g/dL

6.4 ± 0.7

6.5 ± 0.6

6.2 ± 0.6

6.4 ± 0.7

0.539

Albumin, g/dL

3.5 ± 0.4

3.5 ± 0.4

3.4 ± 0.5

3.6 ± 0.4

0.270

Blood urea nitrogen, mg/dL

65 ± 13

63 ± 10

68 ± 17

67 ± 12

0.460

Creatinine, mg/dL

11.5 ± 3.0

13.1 ± 3.1

11.1 ± 2.3

10.1 ± 3.0

0.003

Uric acid, mg/dL

6.8 ± 1.1

6.7 ± 1.2

6.7 ± 1.0

6.9 ± 1.1

0.341

Sodium, mEq/L

136 ± 4

134 ± 3

137 ± 3

139 ± 2

< 0.001

Potassium, mEq/L

4.4 ± 0.6

4.4 ± 0.7

4.2 ± 0.6

4.7 ± 0.5

0.306

Chloride, mEq/L

98 ± 5

94 ± 3

98 ± 4

102 ± 4

< 0.001

Calcium, mg/dL

9.5 ± 0.4

9.5 ± 0.4

9.5 ± 0.5

9.5 ± 0.4

0.643

Phosphate, mg/dL

5.4 ± 1.2

5.4 ± 1.7

5.3 ± 0.7

5.4 ± 1.2

0.894

Glucose, mg/dL

108 ± 31

112 ± 35

105 ± 26

107 ± 34

0.408

Total cholesterol, mg/dL

182 ± 44

168 ± 33

195 ± 58

183 ± 37

0.355

Triglyceride, mg/dL

126 ± 73

126 ± 84

114 ± 53

138 ± 82

0.569

LDL-C, mg/dL

96 ± 27

85 ± 22

105 ± 26

100 ± 30

0.176

HDL-C, mg/dL

52 ± 18

53 ± 14

53 ± 22

52 ± 16

0.794

Hb, g/dL

10.2 ± 1.1

9.8 ± 1.0

10.0 ± 1.2

10.9 ± 0.7

< 0.001

C-reactive protein, mg/dL

0.08 (0.03–0.13)

0.07 (0.04–0.15)

0.08 (0.03–0.22)

0.06 (0.03–0.11)

0.631

Serum iron, μg/dL

87 ± 26

84 ± 26

87 ± 31

88 ± 22

0.735

TIBC, μg/dL

283 ± 34

301 ± 34

268 ± 37

281 ± 22

0.074

TSAT, %

30.7 ± 9.3

28.2 ± 8.8

32.2 ± 10.3

31.7 ± 8.7

0.213

Ferritin, ng/mL

130 (80–220)

108 (73–205)

216 (89–306)

113 (59–177)

0.643

Whole PTH, pg/mL

94 (55–151)

89 (55–128)

92 (37–173)

97 (52–163)

0.801

BNP, pg/mL

86 (37–298)

222 (67–468)

101 (34–433)

47 (20–116)

0.023

eEPO, U/mL

16.0 (13.6–25.1)

22.1 (13.9–24.9)

17.7 (13.9–24.3)

18.6 (14.0–23.7)

0.618

BMG, mg/L

23.2 (18.1–28.8)

28.6 (26.6–37.3)

22.8 (19.9–29.6)

17.6 (14.6–18.9)

< 0.001

HbA1c, %

5.4 ± 0.7

5.3 ± 0.8

5.5 ± 0.7

5.5 ± 0.8

0.128

  1. Values are expressed as mean ± standard deviation or median (interquartile range) as appropriate
  2. Abbreviations:BMG β 2-microglobulin, BNP brain natriuretic peptide, eEPO endogenous erythropoietin, Hb hemoglobin, HbA1c hemoglobin A1c, HDL-C high-density lipoprotein cholesterol, LDL-C low-density lipoprotein cholesterol, PTH parathyroid hormone, rCUC renal creatinine and urea clearance, TIBC total iron binding capacity, TSAT transferrin saturation