The normal values of the thyroid hormones can vary depending on the laboratory that performs the test, but the following are generally accepted ranges:

-TSH: 0.4 to 4.5 mIU/L

-Free T4: 0.7 to 1.9 ng/dL

-Free T3: 1.2 to 2.8 pg/mL

The interpretation of thyroid hormone levels can be complex and should always be done by a qualified medical professional. However, here is a general overview of how thyroid hormone levels can be interpreted:

a) TSH: TSH is a hormone produced by the pituitary gland. It stimulates the thyroid gland to produce T4 and T3. A high TSH level indicates hypothyroidism, which is an underactive thyroid. A low TSH level indicates hyperthyroidism, which is an overactive thyroid.

b) Free T4: Free T4 is the unbound form of T4, which is the main hormone produced by the thyroid gland. A high free T4 level indicates hyperthyroidism, while a low free T4 level indicates hypothyroidism.

c) Free T3: Free T3 is the unbound form of T3, which is the active form of thyroid hormone. A high free T3 level indicates hyperthyroidism, while a low free T3 level indicates hypothyroidism.

It is important to note that the interpretation of thyroid hormone levels can be complicated by other factors, such as pregnancy, medications, and certain medical conditions. If you have any concerns about your thyroid hormone levels, it is important to see your doctor for further evaluation.

Here are some additional things to keep in mind when interpreting thyroid hormone levels:

-TSH levels can fluctuate throughout the day. It is best to have your TSH level tested in the morning when it is typically highest.

-TSH levels can be affected by medications. Some medications, such as steroids and birth control pills, can raise TSH levels. Other medications, such as lithium and amiodarone, can lower TSH levels.

-Thyroid hormone levels can be affected by certain medical conditions. Some medical conditions, such as Hashimoto's thyroiditis and Graves' disease, can cause changes in thyroid hormone levels.