The median (IQR) Hb value of hypothyroidism was 13.6 g/dL (2.3) and hyperthyroidism 14.4 g/dL (1.5), The median (IQR) values of MCHC, MCH, Hct, WBC, RBC, and platelet among hypothyroidism and hyperthyroidism patients were also different. The gene discussed is GSTM1; the disease is hyperthyroidism.