This study aims to research whether gensini scoring of white blood cells and their subgroups and hemoglobin (Hb), hematocrit (Htc), erythroscyte and their computational tests are related, through retrospectively evaluating complete blood cell counts of patients who underwent coronary angiography with coronary artery disease (CAD) early diagnosis. Files of 267 patients, 113 women and 154 men over the age of 18, who came to Namık Kemal University Research and Practice Hospital in August 2011 and January 2012 and underwent coronary angiography with CAD early diagnosis, were scanned retrospectively. Patients were grouped as angio-negative (ANG) and angio-positive (APG) according to coronary angiography results. Gensini Scoring was done in APG patients according to angiography results. Hemogram values studied before coronery angiography as well as age, gender and other diseases of patients in both groups were recorded. When ANG and APG erythrocytic parameters were compared, Hb and Htc values did not differ significantly between groups while a significant difference was observed in mean corpuscular volume (MCV) and mean corpuscular hemoglobin (MCH) values. White blood cell count, neutrophil, lymphocyte and monocyte counts were significantly higher in APG compared to ANG. Eosinophil and basophil values and thrombocytic parameters did not differ significantly between groups. A positive correlation was observed between Gensini Score and MCV, MCH, WBC (leukocyte), neutrophil, lymphocyte and monocyte. Consequently, our findings suggest that erythrocyte has a role in CAD pathogenesis like other blood cells or factors in CAD pathogenesis might affect erythrocyte morphology.