Skip to main content

Table 1 Comparison between urinary density (UD) and osmolality (U osm ) classification of low and high concentration ability

From: Is urinary density an adequate predictor of urinary osmolality?

UD criteria Osmolality criteria
All patients Low (<350mOsm/kg) Normal (350-600mOsm/kg) High (>600mOsm/kg)
Low UD (≤1.010 kg/L) 71 27 20
Normal UD (1.011 – 1.019 kg/L) 79 89 43
High (UD ≥1.020 kg/L) 26 25 36
Patients with AKI  
Low UD (≤1.010 kg/L) 28 2 0
Normal UD (1.011 – 1.019 kg/L) 20 17 2
High (UD ≥1.020 kg/L) 13 11 2
Patients with CKD  
Low UD (≤1.010 kg/L) 8 10 10
Normal UD (1.011 – 1.019 kg/L) 23 38 6
High (UD ≥1.020 kg/L) 3 5 3
Patients with glomerulonephritis  
Low UD (≤1.010 kg/L) 28 7 1
Normal UD (1.011 – 1.019 kg/L) 36 21 2
High (UD ≥1.020 kg/L) 10 9 4
Healthy individuals  
Low UD (≤1.010 kg/L) 7 8 9
Normal UD (1.011 – 1.019 kg/L) 0 13 33
High (UD ≥1.020 kg/L) 0 0 27
  1. Bold numbers show agreement between UD and Uosm.
  2. AKI, acute kidney injury; CKD, chronic kidney disease.
\