Gentian Cystatin C GFR Ruler
The Gentian Cystatin C ruler is a 15cm ruler showing the relationship between serum cystatin C levels mg/L and GFR units.
The ruler shows the range for normal GFR levels (green) and GFR levels indicating renal dysfunction (red). The ruler also shows the creatinine blind area and the stages of kidney disease as classified by NKDEP (National Kidney Disease Education Program. USA). Read about these stages at the bottom of this page.
The ruler can be ordered from your supplier and is freely available at trade shows, congresses and other events.
To view the ruler image in a new window click the link below.
To save the ruler image to your computer; click the right mouse button on the link and select Save target as...
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The Importance of Early Detection and Treatment of CKD
There is a growing body of evidence that indicates that some of the negative outcomes of chronic kidney disease can be averted with early diagnosis and treatment. Unfortunately, it has also been reported that chronic kidney disease is significantly under-diagnosed and under-treated [10,11]. In an effort to improve early diagnosis, the National Kidney Foundation has issued standardized clinical practice guidelines according to the Kidney Disease Quality Initiative (K/DOQI). In these guidelines and recommendations the primary measure of renal function is the glomerular filtration rate (GFR). The table and figure below show the different stages of kidney disease as they develop. Kidney transplantation is required when kidney function reaches stage 5 also known as ESRD (End Stage Renal Disease).
References:
10. United States Renal Data Systems.
11. National Kidney Disease Education Program (NKDEP).
Stages of Kidney Disease following the NKDEP Classification
(National Kidney Disease Education Program)
| Classification__ |
Description of Stage of Kidney Disease_____ | GFR Range______________ |
| Normal | Healthy kidneys - normal GFR | GFR > 90 mL/min/1.73m2 |
| Stage 1 | Kidney damage with normal or elevated GFR | GFR > 90 mL/min/1.73m2 |
| Stage 2 | Kidney damage and mild decrease in GFR | GFR of 60 - 89 mL/min/1.73m2 |
| Stage 3 | Moderate decrease in GFR | GFR of 30 – 59 mL/min/1.73m2 |
| Stage 4 | Severe decrease in GFR | GFR < 16 – 29 mL/min/1.73m2 |
| Stage 5 | Kidney failure - End Stage Renal Disease (ESRD) | GFR < 15 mL/min/1.73m2 |
