TABLE 2

BPA, Creatinine-Standardized BPA, and Creatinine Concentrations in Urine During Gestation and Childhood

nProportion Detected, %Minimum5th Percentile25th PercentileMedian75th Percentile95th PercentileMaximum
BPA level, μg/L of urine
    Gestational mean24497<LOD0.51.12.03.37.637
        16 wk24489<LOD<LOD0.81.83.29.772
        26 wk24090<LOD<LOD0.81.73.39.442
        Birth22386<LOD<LOD0.71.22.36.849
    Childhood mean2291000.61.22.44.17.018206
        1 y21397<LOD0.51.83.97.622325
        2 y19599<LOD0.71.52.96.124616
        3 y22296<LOD0.51.42.95.21567
Creatinine-standardized BPA level, μg/g creatininea
    Gestational mean244970.51.11.62.23.58.020
        16 wk24389<LOD0.61.11.73.01038
        26 wk240890.40.81.42.13.47.958
        Birth22386<LOD0.61.21.82.89.427
    Childhood mean2291002.34.67.6142162431
        1 y212971.54.79.9183491812
        2 y195991.13.05.79.619631273
        3 y222960.91.53.05.3102495
Creatinine level, mg/dL urine
    16 wk2431007.72053104160284487
    26 wk2401009.2144279139264428
    Birth2231009.3183772109190285
    1 y2121003.835.812193475144
    2 y1951005.516.919356083201
    3 y2221006.912345473119269
  • a Creatinine-standardized urinary BPA concentrations were calculated by dividing urinary BPA concentrations by urinary creatinine concentrations, to control for urine dilution, whereas nonstandardized concentrations were not.