Laboratory parameters
BLOOD
Blood samples were collected to measure the baseline values of Serum Creatinin (SCr), Cystatin C (Cys), inflammatory factors (high sensitive C-reactive protein [hsCRP]), and pro-BNP on admission, and of course, before the loading dose administration. The post-procedural levels of Cys were measured 24 hours after the coronary procedure, the SCr, and the hsCRP at 72 hours. Previous studies had shown that the peak of cystatin C elevation occurred by the 24