title: Normal integrated concentration of aldosterone and plasma renin activity: effect of age.
abstract: The integrated concentration of aldosterone (IC-ALDO) and PRA (IC-PRA) was studied in 78 normal subjects ranging in age from 9--50 yr. Whereas the IC-ALDO to IC-PRA were found to decrease with age, the ratio of IC-ALDO to IC-PRA was not affected by age. A significant lowering of the normal range and variance was achieved by measuring the 24-h integrated concentration instead of the concentration in discrete samples.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000450:Aldosterone / Q000097:blood*; D003404:Creatinine / Q000652:urine; D006801:Humans; D008875:Middle Aged; D011188:Potassium / Q000652:urine; D012083:Renin / Q000097:blood*; D012964:Sodium / Q000652:urine
chemical_list: D000450:Aldosterone; D012964:Sodium; D003404:Creatinine; D012083:Renin; D011188:Potassium