![]() We concluded that the normal range of BUN and Cr levels differed between young and elderly subjects, and that the decline in renal function correlated with age after the seventh decade. The normal range for the BUN:Creatinine ratio (BCR) has not been determined for infants and children. Range of motion requirements of all activities were defined 37.85° extension, 91.18° flexion, 1.25° adduction, 39.45° abduction, 63.6° internal rotation, 21.8° external rotation in the dominant shoulder, 124.17° flexion in the dominant elbow, 40.29° extension, 23.66° flexion, 18.31° supination, 12.56° pronation, 18.27 ulnar deviation and, 18. Although Cr levels did not correlate with age in elderly subjects, Cr levels divided by body surface area significantly correlated with age. Significant positive correlation was found between BUN levels and age in male elderly subjects. The mean Cr level in the elderly subjects was slightly higher than that in the control subjects. The mean BUN level in the elderly subjects was significantly higher than that in the control young subjects. Created for people with ongoing healthcare needs but benefits everyone. Other causes can be high protein load in the diet, muscle injury or mu. The estimated normal range of BUN was 14-23 mg/dl both in male and female elderly subjects, and that of Cr was 0.9-1.3 mg/dl in male and was 0.7-1.1 mg/dl in female. Dehydration: Is most common cause of high BUN with normal creatinine (therefore high ratio). We defined the normal range as range within the single SD-line of the remainder. We calculated the mean and the standard deviation (SD) in each group, and excluded subjects with values beyond twice the SD-line. The body produces much more BUN than creatinine, and the ideal ratio lies between 10. This study was a part of the Kahoku Longitudinal Aging Study (KLAS) that aims to reveal the comprehensive functions in the aged. The normal range for BUN/Creatinine ratio is anywhere between 5 20 mg/dL. We measured the variables also in 315 cases of sex-matched young control subjects (male, 139 female, 176). To estimate normal ranges of blood urea nitrogen (BUN) and serum creatinine (Cr) levels in the aged, we measured BUN and Cr levels in 332 cases of apparent-healthy elderly subjects (male, 152 female, 180) aged 70 years or more.
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