KLK1 and coronary artery disorder: Plasma tissue kallikrein levels, which weremeasured via ELISA, were significantly higher in CAD patients than in controls (0.347 ±0.082 vs. 0.256 ± 0.087 mg/L, p < 0.001) and were directly associated with a higherrisk of CAD (odds ratio = 3.49, 95% confidence interval: 2.90-4.19).