Are there more erythrocytes in the blood than leukocytes?

Yes, there are more erythrocytes (red blood cells) in the blood than leukocytes (white blood cells). In a healthy adult, the average red blood cell count is approximately 4.5-5.9 million cells per microliter of blood, while the average white blood cell count ranges from 4,500-11,000 cells per microliter. This means that for every one white blood cell in the blood, there are about 400-1300 red blood cells.