CST3 and acute kidney injury: Serum creatinine values are also affected by muscle mass, hydration status, age, sex, gender and method of measurement.19 Trends are now toward search for early markers of AKI like serum cystatin C and NGAL (neutrophil gelatinase associated lipocalin.20,21 AKI was mostly non oliguric (64.29%) in our case series as reported in other previous studies.