Table 2.

Maternal, cord, and infant blood tacrolimus levels and breast milk levels

Sample TypeBreast-Fed Infants (n=12)Bottle-Fed Infants (n=3)All
nMedian (Range)nMedian (Range)nMedian (Range)
Gestation (wk)36 (24–39)35 (32–37)36 (24–39)
Birth weight (g)2450 (720–2910)2431 (1750–2822)2440 (720–2910)
Maternal blood at delivery (µg/L)76.2 (4.6–11.2)17.386.6 (4.6–11.2)
Maternal blood day ≥1 (µg/L)244.1 (1.3–7.0)a79.0 (4.9–16)a314.4 (1.3–16)
Infant cord blood (µg/L)64.6 (1.0–9.0)14.674.6 (1.0–9.0)
Infant blood day ≥1 (µg/L)241.3 (0.0–4.0)61.0 (0.0–2.3)301.1 (0.0–4.0)
Breast milk (µg/L)170.7 (0.1–1.6)51.3 (0.7–1.6)220.8 (0.1–1.6)