Product Features
Diazyme’s Cystatin C assay is a convenient cost effective dual liquid stable PEIA method for this critically important emerging marker in the early detection and diagnosis of renal disease.  The assay is highly sensitive with a sensitivity of 0.5 mg/dL(eGFR 217 mL/min/1.73m2 ), and an extended linear range up to 8.0 mg/dL (eGFR 4 mL/min/1.73m2). The Diazyme method has an excellent correlation with existing commercially available products and is highly precise with intra and inter %CV <5.0%. Packaged for optimal operator convenience, reagent transfer can be eliminated for most chemistry systems with instrument specific packaging options including Roche Hitachi 917 series, Olympus AU (400/600/640/680), Beckman Synchron CX, LX and DXC and Dade Dimension and Expand.  Reagents are stable for 12 months when stored at 2°-8°C. 

Assay Principle
Cystatin C in the sample binds to the specific anti-Cystatin C antibody, which is coated on latex particles, and causes agglutination. The degree of the turbidity caused by agglutination is measured optically and is proportional to the amount of Cystatin C in the sample. 

Intended use
The assay is for the quantitative in vitro determination of Cystatin C in human serum or plasma. There is a growing body of evidence suggesting that Cystatin C can be used to detect kidney disease at earlier stages, which may help facilitate prevention efforts in the elderly and those with diabetes, hypertension, or cardiovascular disease. 


Catalog Number             



Kit (360 Tests)


R1: 1 x 100 mL
R2: 1 x 20 mL

Latex Enhanced
Immunoturbidity Assay



5 x 1 mL




2 x 1 mL