Table 1. Subject Demographics and Sample Characteristics.

Infant
gender	female	14
	male	15
Mother
BMI	normal	18
	overweight	7
	obese	4
age, years	median	32.4
	range	26–42.8
Milk Samples
samples included in pool	median	9
	range	5–16
time (days) between first and last sample in pool	median	10
	range	2–28
total protein concentration (mg/mL)	mean	9.4
	range	8.6–10.2