Table 2.

Free and total choline concentrations in maternal blood at different gestational age windows and in cord blood¹

	16–18 wk	24–26 wk	30–32 wk	36–38 wk	Cord
Free choline (μmol/L)	9.34 (7.69–11.50) [355]	9.39 (7.76–11.00) [371]	9.14 (7.85–10.80) [348]	10.10 (8.46–12.00) [298]	36.40 (27.80–49.25) [364]
Total choline (mmol/L)	2.57 (2.33–2.80) [356]	2.62 (2.43–2.90) [374]	2.69 (2.49–2.95) [349]	2.75 (2.48–2.99) [298]	1.40 (1.24–1.56) [330]

¹All values are median; interquartile range in parentheses; n in brackets.