Figure 1 of
Payne, Mol Vis 2011; 17:2318-2324.
Figure 1.
Age-adjusted reference ranges for the IDS iSYS insulin-like growth factor (IGF)-I assay. For both males (
A
) and females (
B
), there is a peak in serum IGF-I levels during puberty and a gradual decline during adulthood.