TABLE 2.
Breast milk vitamin D and 25-hydroxyvitamin D concentrations by race1
| Mean concentration, pg/mL (95% CI) |
|||||
| Breast milk metabolites | No. | White | No. | Black | P Value |
| Vitamin D-3 (cholecalciferol) | 14 | 268 (127–567) | 10 | 36 (22–58) | 0.002 |
| Vitamin D-2 (ergocalciferol) | 14 | 290 (164–512) | 10 | 54 (22–134) | 0.001 |
| 25-Hydroxyvitamin D-3 (25-hydroxycholecalciferol) | 15 | 124 (97–159) | 10 | 87 (75–101) | 0.03 |
| 25-Hydroxyvitamin D-2 (25-hydroxyergocalciferol) | 15 | 82 (64–105) | 10 | 66 (52–85) | 0.21 |
| Total antirachitic activity, IU/L 2 | 64 | 34 | |||
1
Reproduced with permission from (14).
2
Conversions to antirachitic activity in international units/liter were based on the following: 25 pg/mL of vitamins D-3 and D-2 = 1 IU/L and 5 pg/mL of 25-hydroxyvitamins D-3 and D-2 = 1 IU/L.