Serum levels of aminoterminal type III procollagen peptide in normal subjects and hepatic fibrosis

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Abstract
Serum levels of aminoterminal type III procollagen peptide in normal subjects were determined by radioimmunoassay. The levels of the peptide markedly increase in infants and gradually decrease with age in childhood. The peptide increases again in prepubertal children and then decreases through adulthood. These findings suggest that increased levels of the peptide reflect accelerated collagen synthesis in the human body. Comparison of serum levels of the peptide with the degree of hepatic fibrosis revealed that the peptide increased in parallel with the progress of hepatic fibrosis.