Cystatin C in human serum
Each sample consists of lyophilised human serum spiked with cystatin C. It contains the following additives:
4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES), sodium azide, benzamidine chloride and aprotinin.
The material is kept under nitrogen gas in siliconised glass vials. Mass concentration measured in the
reconstituted material
Certified value ................................ 5.48 ± 0.15 mg/L
