Cystatin C and Creatinine | 合法醫療器材資訊網
Why do labs need a marker in addition to creatinine to estimate glomerular filtration rate (GFR)?
A: Creatinine is a byproduct of muscle metabolism that is freely filtered by the kidney, the blood concentration of which reflects GFR. However, because muscle mass varies depending on age, sex, race, and level of fitness, the serum concentration of creatinine can still differ between individuals with the same level of kidney function.
The most recent equations for estimating GFR get around this issue to some extent by adjusting for age, sex, and race, which account for much of the inter-individual variability in muscle mass. The equations do not account for other factors that might be important, though, such as chronic illness, malnutrition, or even a larger-than-average muscle mass.
What are the advantages of cystatin C versus creatinine?
Cystatin C is made by al...
Cystatin C and Creatinine | 合法醫療器材資訊網
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Creatinine | 合法醫療器材資訊網
Clarifying the confusion of GFRs | 合法醫療器材資訊網
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The Difference Between Cystatin C– and Creatinine | 合法醫療器材資訊網
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