The present study was performed on 80 female subjects between (30-60) years, who attended the Specialized Center for Endocrinology and Diabetes during the period from April to July; 2011. The subjects were divided into 3 groups : controls , non diabetic autoimmune thyroid patients , and non diabetic autoimmune thyroid patient with renal diseases as complication The results showed a significant increase in serum T 3 T4 levels in hyperthyroidism patients, and significant decrease in serum T3,T4 levels in hypothyroidism patients ,while a significant difference in serum TSH levels in hyperthyroidism and hypothyroidism patients when compared to control group The results show also a significant increase in serum antibodies to thyroid peroxidase(anti-TPO) level in both hyperthyroid and hypothyroid patient's when compared to control group. In addition to, there was a significant increase in serum beta-2-microglobulin (132M) level in thyroid patients and renal thyroid patients compared to control group, while there was no significant increase in serum [32M level in renal thyroid compared to thyroid patient's. In conclusion, [32M can be used as a biomarker in autoimmune thyroid and renal autoimmune thyroid patient's. In addition to the [32M level in renal thyroid diseases was higher than that in thyroid diseases.