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Table 3 Intra-individual variability in hourly urinary flow rate and creatinine excretion rate over a 24-h period

From: Concentrations versus amounts of biomarkers in urine: a comparison of approaches to assess pyrethroid exposure

  Urinary flow rate Creatinine excretion rate
  Mean
(mL/h)
Min
(mL/h)
Max
(mL/h)
Max
Min
CVa
%
Mean
(g/h)
Min
(g/h)
Max
(g/h)
Max
Min
CVa
%
Subject 1 66.9 38.4 96.5 2.5 36.1 0.074 0.043 0.10 2.4 32.9
Subject 2 67.7 38.4 107 2.8 48.2 0.061 0.055 0.069 1.3 9.66
Subject 3 120 24.9 437 18 101 0.044 0.031 0.051 1.7 13.7
Subject 4 119 57.6 176 3.1 42.3 0.038 0.030 0.047 1.6 14.5
Subject 5 68.8 23.2 123 5.3 57.0 0.027 0.012 0.038 3.2 32.0
Subject 6 46.2 24.7 62.4 2.5 42.0 0.035 0.028 0.044 1.6 24.0
Subject 7 91.0 22.9 185 8.1 77.7 0.034 0.026 0.040 1.5 14.3
Subject 8 53.9 26.9 107 4.0 68.5 0.069 0.065 0.074 1.1 6.06
Subject 9 38.0 20.3 57.3 2.8 40.0 0.052 0.049 0.055 1.1 6.00
Subject10 70.9 25.1 99.0 3.9 42.8 0.037 0.032 0.045 1.4 15.4
Subject 11 49.0 24.0 67.6 2.8 38.8 0.037 0.022 0.047 2.1 31.0
Subject 12 97.9 21.3 168 7.9 58.9 0.033 0.015 0.044 2.9 34.0
Subject 13 50.3 28.3 84.9 3.0 45.7 0.065 0.034 0.082 2.4 27.6
Subject 14 93.4 53.5 167 3.1 54.2 0.055 0.049 0.077 1.6 17.9
Subject 15 98.4 14.6 188 13 59.7 0.037 0.010 0.063 6.6 48.4
  1. aCV = coefficient of variation (standard deviation/mean × 100%)