The most direct method for measuring creatinine clearance is the collection of urine samples for a time period of 24 hours and a blood sample. Alternatively, a formula that uses the blood levels of creatinine, age, weight, and gender can also be used to calculate clearance [5]. Despite the...
inulin clearance test 菊粉清廓试验,菊粉清廓试验 carbon clearance test 碳粒清除试验 相似单词 creatinine 肌酸酐; 肌酐 clearance n. 1.[C,U]清理、清除或整理某事物 2.[C](足球、曲棍球等)将球踢出或击出球门区的动作 3.[C,U]净空,余隙,量(一物从另一物旁边或下面经过时,两者间的空隙) 4.[...
you may be asked to collect your urine over a 24-hour period in a container provided by your health care team for a creatinine clearance test. This method is inconvenient and not commonly used anymore, but it may still be
Creatinine clearance is the theoretical volume of blood which is wholly cleared of creatinine following one passage through the kidney. It is a measure of glomerular function, based on the assumption that there is neither excretion nor absorption of creatinine by the renal tubules....
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Table 1. Normal creatinine clearance by age What are considered high and low creatinine blood test levels? In general, any creatinine measurement over 1.3 is abnormally high. Low levels of creatinine (below the reference range for the laboratory) are sometimes seen in people with low muscle mass...
A blood creatinine level or a creatini ne clearance test is done to: See if your kidneys are working normally. See if your kidney disease is changing. See how well the kidneys work in peopl e who take medicines that can cause kidney damage. How To Prepare Do not do any strenu...
While there are no contraindications for either test, the creatinine clearance test may be impractical for people with acute urinary retention (the decreased ability to urinate). Before the Test There are no preparations needed for a serum creatinine blood test. The 24-hour urine collection, by ...
creatinine clearance test has become one of the most sensitive tests for measuring glomerular filtration rate. In kidney disease, creatinine levels in the blood are elevated, whereas the creatinine clearance rate and hence the urine levels are diminished. Creatinine test is most widely used to ...
However, the reliability of creatinine clearance is greatly diminished by variability in tubular secretion of creatinine and by the inability of most patients to accurately collect timed urine samples. Prolonged storage of the urine can also introduce error, as high temperature and low urine pH ...