Indices of Blood Biochemistry in Relation to Age, Height, and Weight

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Abstract
Clinical indices of blood biochemistry were determined for 358 male residents of Calcutta, India, ranging in age from 17 to 83 years. Twenty-eight variables were treasured for each subject: physical variables of age, height, and weight; chemical variables for blood or serum, specifically, glucose, chlorides, urea, creatinine, calcium, uric acid, inorganic phosphorus, thyirol-turbidity, bilirubin, total cholesterol, cholesterol ester, and free cholesterol; hematological variables, including hen oglobin, mean corpuscular hemoglobin concentration, erythrocytes, leucocytes, neutrophils, lymphocytes, eosinophils, sedimentation rate, and volume of packed erythrocytes; and circulatory system variables of pulse rate and systolic and diastolic pressure. For each of the chemical, hematological, and circulatory system variables, mean, standard deviation, and normal range have been computed. Multiple regression analysis of the contribution of age, height, and weight to each of these variables has been carried out. Values of the following variables increased significantly with age: glucose, chlorides, calcium, neutrophils, sedimentation rate, pulse rate, systolic pressure and diastolic pressure. A significant decrease was observed for the following variables when age increased: erythrocytes, lymphocytes, eosinophils, and volume of packed erythrocytes. Increased weight was associated with a significant increase in thymol-turbidity, total cholesterol, cholesterol ester, free cholesterol, systolic pressure, and diastolic pressure. Expected values of these variables at different ages, heights, and weights are presented, as are observed and expected values for subjects from 20 to 69 years of age.