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Table 4 Physiologic Requirements for Iron in Different Pregnancy Periods

From: Physiologic requirement for iron in pregnant women, assessed using the stable isotope tracer technique

TrimesterNIron physiological requirement (μg.d−1)Iron physiological requirements adjusted by weight (μg.kg−1.d−1)
First42039.07 ± 1863.5932.28 ± 28.81
Second43258.90 ± 835.7346.90 ± 14.6
Third34134.47 ± 580.4155.74 ± 13.05