Hydroxyproline Indices

WHEN it was known that the excretion of hydroxyproline peptides in the urine was correlated with active growth, and varied in a characteristic way with age1–3, Alison et al.4 demonstrated that as a measure of growth the ratio of hydroxyproline : creatinine in a 24 h collection of urine was a great improvement on the hydroxyproline excretion/24 h, because… (More)