Introduction: Diabetes and thyroid disorders have been shown to mutually influence each other and higher prevalence of thyroid dysfunction is found in diabetes.

Materials and Methods: The present case–control studyincluded 100 type 2 diabetic patients and 50 apparently healthy controls. Serum levels of free triiodothyronine (fT3), thyroxine (fT4) and thyroid stimulating hormone (TSH) were assayed in all subjects.

Results: Serum level of TSH in type 2 diabetic patients were significantly increased in comparison to apparently healthy controls and serum levels of fT3 and fT4 were significantly low in comparison to apparently healthy controls.

Conclusion:Regular screening of thyroid disorder in all type 2 diabetic patients should be done to achieve healthy life.