Findings: The groups were found as similar in regards to age, gender, smoking history (p<0.05). There was no difference between the two groups in regards to hemoglobin, platelet, MPV, creatinine, ALT, D-dimer, albumin, FAR, NLR, DDAR levels (p<0.05). AST levels were slightly higher in pRP group (p=0.027). Markedly increased WBC, fibrinogen, MPV and MCP-1 values were detected in pRP group (p=0.000). Additionally, higher abnormal FMD responses were detected in pRP group (p=0.000). There was a direct correlation between abnormal FMD response and serum MCP-1 values in patients with pRP (R: 0.308, R2: 0.095, p: 0.044).