GSTM1 and anemia: Main laboratory tests including WBC, RBC, HB, HCT, PLT, PT, CRP, Urea, Cr, LDH, Na, and K were in the normal range in both patient and control groups, but about 22% of patients show leukopenia (WBC < 4x109 /μL), 25% decrease RBC count and 38% of patients show anemia (Less than 12 gr/dl in Female or less than 14 gr/dL in Male) in Hb concentration.