Thyroid function report card mainly looks at serum free thyroxine (FT4), serum total thyroxine (TT4), thyroid stimulating hormone (TSH) and other indicators, it is recommended to consult a doctor. 1. FT4: It can accurately reflect the function of the thyroid gland. Elevated FT4 can be seen in hyperthyroidism, overdose of thyroid preparation, etc., and decreased FT4 can be seen in primary hypothyroidism, etc. 2. TT4: it is a common indicator for diagnosing hyperthyroidism or hypothyroidism in clinic; elevated TT4 can be seen in hyperthyroidism, pituitary thyroid hormone tumor, etc., and lowered TT4 can be seen in hypothyroidism, hypoproteinemia, cirrhosis of the liver, etc. 3.TSH: It is one of the important indicators for diagnosis, treatment of hyperthyroidism and hypothyroidism and study of hypothalamic-pituitary-thyroid axis. Elevation of TSH can be seen in primary hypothyroidism, TSH secretion tumor, etc. Decrease of TSH can be seen in pituitary hypothyroidism, hyperthyroidism caused by non-thyroid stimulating hormone tumors. It is recommended to diagnose the disease under the guidance of the doctor with the combination of thyroid function report, medical history, clinical manifestations, other test results, etc., and not to judge the condition on your own to avoid delaying the condition.