Table 22.

Laboratory Values at 6 Months of Age^a

Analyte	Human milk (n = 8)	Enfamil (n = 11)	ProSobee (n = 11)
Serum measurement
Vitamin D (ng/mL)	2.2±0.9	2.0±0.8	2.3±1.2
25-Hydroxyvitamin D (ng/mL)	25.6±3.3	23.8±3.1	24.0±5.3
1,25-Dihydroxyvitamin D (pg/mL)	29.3±11.3	45.4±15.9b	47.7±10.2b
Calcium (mg/dL)	10.0±0.6	9.9±0.6c	10.5±0.5b,c
Phosphorus (mg/dL)	5.5±0.3	6.0±0.7d	6.6±0.9b
Magnesium (mEq/L)	1.81±0.13	1.79±0.13c	1.95±0.15b,c
Alkaline phosphatase (IU/L)	78±22	59±8	70±23
Parathyroid hormone (µlEq/mLd)	3.2±2.5	2.2±0.4	3.1±0.8
Albumin (g/dL)	4.7±0.4	4.5±0.3	4.5±0.6
Urine measurement
Calcium (mg/mg creatinine)	0.37±0.31	0.25±0.14	0.29±0.28
Phosphorus (mg/mg creatinine)	0.71±0.44	1.4±0.3b	1.5±0.66b
Magnesium (mEq/mg creatinine)	0.018±0.008	0.018±0.005c	0.029±0.017b,c

^aValues are mean±SD. From Hillman et al. (1988).

^bDifferent from human milk: P<0.05.

^cDifference between ProSobee and Enfamil, P<0.05.

^dUnits as in the original.