Assay of ghrelin concentration in infant formulas and breast milk

Table 2 Ghrelin concentrations in infant formulas, in mother's milk, in cow’s milk and in serum of lactating mothers, breast-fed infants and formula-fed infants

	Ghrelin concentration (pg/mL ± SD)
Milk
Different kinds of artificial infant formula (n = 19)	2007.1 ± 1725.36a
Breast milk (n = 20)	828.17 ± 323.32a
Non pasteurized cow milk (n = 5)	2816.00 ± 219.00
Serum
Lactating mothers (n = 20)	1319.18 ± 140.18
Breast-fed infants (n = 37)	1045.7 ± 263.38b
Formula-fed infants (n = 19)	1247.93 ± 328.07b

^aP = 0.005, infant formulas vs human milk, student’s t test;

^bP = 0.023, breast-fed infants vs formula-fed infants, student’s t test.