2009
DOI: 10.3109/00365510903307947
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Biological variation of cystatin C and creatinine

Abstract: In the present study, the intra-individual variance was greater for cystatin C than for creatinine in both healthy subjects and in patients with impaired renal function. Accordingly, serum creatinine is the preferred marker for serial monitoring of renal function in individuals with stable muscle mass.

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Cited by 63 publications
(55 citation statements)
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“…In this respect, there are important differences between serum creatinine and Cys. Studies in which the biological variability of the 2 markers was compared (21,22 ) consistently revealed much lower intraindividual variability for serum creatinine (approximately 4.5%) than for Cys (approximately 10%) and a correspondingly lower index of individuality for the former (approximately 0.3 and approximately 0.9, respectively). These biological features make serum creatinine a useful parameter for detecting temporal changes in a patient's kidney function, especially in the early stages of renal impairment (11 ), but at the same time make it less suitable for screening purposes.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…In this respect, there are important differences between serum creatinine and Cys. Studies in which the biological variability of the 2 markers was compared (21,22 ) consistently revealed much lower intraindividual variability for serum creatinine (approximately 4.5%) than for Cys (approximately 10%) and a correspondingly lower index of individuality for the former (approximately 0.3 and approximately 0.9, respectively). These biological features make serum creatinine a useful parameter for detecting temporal changes in a patient's kidney function, especially in the early stages of renal impairment (11 ), but at the same time make it less suitable for screening purposes.…”
Section: Discussionmentioning
confidence: 99%
“…With the use of available data on biological variability (21,22 ) and the analytical CV of the laboratory test, the calculated reference change value (24 ) that we can use to interpret our findings is 14.8 for serum creatinine and 25.6 for Cys. The lower relative change value obtained for serum creatinine further confirms the ability of this biomarker to distinguish small, but nonetheless clinically important, changes and thus guide medical decisions.…”
Section: Discussionmentioning
confidence: 99%
“…Sebaliknya, penilaian LFG berdasarkan cystatin C tidak dipengaruhi oleh tinggi badan sehingga lebih sensitif menilai LFG. 17,18 Nilai LFG berdasarkan kreatinin dan cystatin C tidak dipengaruhi oleh tinggi badan. Hasil ini tidak sesuai dengan teori ataupun penelitian yang dilakukan di Brazil dengan nilai LFG berdasarkan kreatinin seharusnya dipengaruhi oleh tinggi badan.…”
Section: Pembahasanunclassified
“…Nem egységes a cisztatin-C egyénen belüli biológiai változatosságának a megítélése sem. Bizonyos tanulmányok szerint hasonló volt a változatos-ság, míg mások szerint a cisztatin-C-é többszöröse a kreatininének [11,12,13]. Számos képletet dolgoztak ki az mGFR alapján a kreatininen és a cisztatin-C-n alapuló eGFR-re.…”
Section: Megbeszélésunclassified