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Table 4 Levels of spot urine protein, albumin, and α-1 microglobulin excretion according to 24-h proteinuria*

From: First and second morning spot urine protein measurements for the assessment of proteinuria: a diagnostic accuracy study in kidney transplant recipients

Parameter

24-hour proteinuria (mg/day/1.73m2)

P valuea

150–299

300–999

≥ 1000

PCR (mg/mmol)

 first morning urine

24 (19 to 36)

57 (37 to 72)

189 (139 to 282)

< 0.001

 second morning urine

22 (19 to 29)

56 (42 to 68)

188 (133 to 290)

< 0.001

ACR (mg/mmol)

 first morning urine

5 (2 to 13)

17 (10 to 34)

143 (77 to 193)

< 0.001

 second morning urine

5 (2 to 8)

22 (12 to 34)

123 (83 to 216)

< 0.001

α-1 MCR (mg/mmol)

 first morning urine

3.2 (1.6 to 5.5)

5.4 (3.0 to 7.8)

4.3 (3.1 to 6.0)

0.002

 second morning urine

3.4 (1.8 to 4.5)

5.9 (2.5 to 8.4)

4.8 (2.8 to 8.1)

0.009

  1. *Data are presented as median (interquartile range)
  2. aDifferences were tested by the Kruskal–Wallis test for non–normally distributed data
  3. Abbreviations: ACR albumin-to-creatinine ratio, α-1 MCR α-1 microglobulin-to-creatinine ratio, PCR protein-to-creatinine ratio
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BMC Nephrology

ISSN: 1471-2369

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