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Creatinine (/ k r i ˈ æ t ɪ n ɪ n,-ˌ ... a 24-hour urine collection, using serum creatinine concentration and some or all of the following variables: sex, age ...
The age term is (140 – age). This means that a 20-year-old person (140 – 20 = 120) will have twice the creatinine clearance as an 80-year-old (140 – 80 = 60) for the same level of serum creatinine. The C-G equation assumes that a woman will have a 15% lower creatinine clearance than a man at the same level of serum creatinine.
The normal range of GFR, adjusted for body surface area, is 100–130 average 125 (mL/min)/(1.73 m 2) in men and 90–120 (mL/min)/(1.73 m 2) in women younger than the age of 40. In children, GFR measured by inulin clearance is 110 (mL/min)/(1.73 m 2) until 2 years of age in both sexes, and then it progressively decreases. After age 40, GFR ...
Unfortunately, serum creatinine is highly variable depending on age, sex, metabolic state, body composition (muscle mass), and rate of excretion by the kidney itself. [13] The rate of urine production (i.e., urine output) is also interpreted as a marker of kidney function but the definitions of low urine output also vary by age.
The GFR is derived from the serum creatinine and is proportional to 1/creatinine, i.e. it is a reciprocal relationship; the higher the creatinine, the lower the GFR. It reflects one aspect of kidney function, how efficiently the glomeruli – the filtering units – work. The normal GFR is >90 ml/min.
Carriers may request them based on your age and desired coverage amount. ... The lab will test your blood’s hemoglobin, leukocytes, creatinine levels and blood urea nitrogen (BUN) score to ...