Markers. The median plasma levels of hs-CRP were similar in patients with SA (0.40 mg/dL) and those with UA (0.69 mg/dL) and were significantly higher than the levels in the control group (0.12 mg/dL). Hs-CRP levels were significantly increased in patients with NSTEMI (1.20 mg/dL) and STEMI (6.76 mg/dL). In order to further investigate the relationship between serum-NGAL and hs-CRP, we performed regression analysis between serum-NGAL and hs-CRP (Figure 3 ). This analysis revealed that there is a linear and positive correlation between hs-CRP and serum NGAL (spearman rank correlation coefficient rho = 0.685, P < 0.0001). The differences that were observed among the four patient groups in WBC and PMN counts were statistically significant (P < 0.001, ANOVA-test). There was a positive and significant correlation between serum-NGAL and WBC (r = 0.510, P < 0.0001) and PMN (r = 0.511, P < 0.0001) counts (Figure 4) .