Prevalence of plasma somatomedin C deficiency

Age is associated with prevalence of plasma somatomedin C deficiency in humans (0% to 55%).

“The prevalence of plasma SmC less than 0.38 U/ml increased progressively from age 20 to 90”

Human trial

Impaired growth hormone secretion in the adult population: relation to age and adiposity

The Journal of clinical investigation·1 May 1981