AGT and nephrolithiasis: The UA concentration in nephrolithiasis patients was 1250.78 ± 439.27 pg/mL, which was significantly higher than in normal control group (219.34 ± 45.27 pg/mL; P < 0.01); the median 24 h urinary angiotensinogen excretion was significantly higher in nephrolithiasis patients versus normal control (8.7 ± 1.12 versus 4.1 ± 0.46 μg/24 h; P < 0.01); urinary angiotensinogen-to-creatinine ratio was also significantly higher in nephrolithiasis patients versus normal control (18.9 ± 5.22 versus 4.3 ± 1.60 μg/g; P < 0.01), as demonstrated in Table 1 and Figure 1.