Onset of Significant GH Dependence of Serum IGF I and IGF Binding Protein 3 Concentrations in Early Life Pediatric Research Frontiers Sheep recombinant IGF 1 promotes organ specific growth in fetal sheep Peptide Dosage Calculator (Reconstitution) Table 2 from Serum concentrations of insulin like growth factor (IGF) 1 and IGF binding protein 3 (IGFBP 3), IGF 1 IGFBP 3 ratio, and markers of bone turnover: reference values for French children and adolescents and z score comparability