Additionally, RA patients had significantly greater levels of the hematological PLT (P = 0.011), LY (P = 0.000), NE (P = 0.025), MO (P = 0.000), EO (P = 0.000), NLR (P = 0.006), and PLR (P = 0.000) when contrasted with the control group. On the other hand, the patient’s hematological tests revealed significantly reduced levels of RBCs (P = 0.003), Hb (P = 0.024), MPV (P = 0.000), and BA (P = 0.048) (Table 4). This evidence concerns the gene GSTM1 and rheumatoid arthritis.