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Amniotic fluid concentrations of sVEGFR-1 in normal pregnant women at term with and without labor. There was no significant difference in the median amniotic fluid sVEGFR-1 concentrations between patients with spontaneous labor and those not in labor (term in labor: median: 65 ng/ml; range: 4.7–243.8 ng/ml; vs. term not in labor: median: 64 ng/ml; range: 10.6-373.4 ng/ml; p=0.6). LOD: limit of detection.
