CFS/ME (n=29) Controls (n=27) P value White blood cells (109/L) 5.39 ± 0.24 5.83 ± 0.22 0.15 Lymphocytes (109/L) 1.69 ± 0.09 1.92 ± 0.08 0.06 Monocytes (109/L) 0.31 ± 0.02 0.3 ± 0.02 0.57 Neutrophils (109/L) 3.2 ± 0.19 3.45 ± 0.18 0.31 Eosinophils (109/L) 0.15 ± 0.01 0.13 ± 0.01 0.33 Basophils (109/L) 0.03 ± 0.003 0.03 ± 0.003 0.60 Platelets (109/L) 241.34 ± 10.72 254.19 ± 12.59 0.50 Red blood cells (1012/L) 4.67 ± 0.09 4.62 ± 0.07 0.46 Haemoglobin (g/L) 140.21 ± 2.48 13.992 ± 2.44 0.72 Haematocrit 0.41 ± 0.007 0.41 ± 0.005 0.76 Mean cell volume (fl) 88.31 ± 0.82 89.23 ± 0.75 0.33 Erythrocyte Sedimentation Rate (mm/Hr) 9.86 ± 1.47 11.84 ± 1.94 0.22

Table 1: Blood parameters measured in the CFS/ME and healthy control groups. Results from the white and red blood cell parameters measured in the CFS/ME and control groups. Comparisons of the blood parameters between the CFS/ME and control groups revealed no significant differences. Data is presented as the mean ± SEM.