Can you have normal TSH and high T4?
However, many people (including those with and without symptoms) have TSH values between 5.0 and 10 but normal levels of T4. It’s called mild or subclinical hypothyroidism.
What does high T4 and normal TSH mean?
Normal TSH + normal T4 = normal thyroid function. Low TSH + high T4 = overactive thyroid. High TSH + low T4 = underactive thyroid. Low TSH + low T4 = low thyroid function due to another problem, such as pituitary gland dysfunction.
What does it mean when your T4 is elevated?
Abnormally high test results Elevated T4 levels may indicate hyperthyroidism. They may also indicate other thyroid problems, such as thyroiditis or toxic multinodular goiter. Other reasons for abnormal results may include: high levels of protein in the blood. too much iodine.
What if my TSH is normal but I still have symptoms?
Some people treated for hypothyroidism may still experience symptoms even if blood tests show that their thyroid stimulating hormone (TSH) levels are well within the normal range.
Can you have symptoms of Hashimoto’s with normal TSH?
Having only the TPO antibodies present with normal TSH and free T4 levels means that your thyroid is functioning normally and you don’t have hypothyroidism, but it does mean that you may have Hashimoto’s disease. Remember that Hashimoto’s doesn’t always cause hypothyroidism.
Can you have hypothyroidism with low TSH?
Central Hypothyroidism In this case, your TSH may be low, but you’re considered to have hypothyroidism because of damage to the pituitary gland. In this example, the gland is not making enough TSH to adequately stimulate the thyroid gland to produce T3 and T4.
Can stress cause high T4 levels?
The impact of stress on the thyroid occurs by slowing your body’s metabolism. This is another way that stress and weight gain are linked. When thyroid function slows during stress, triiodothyronine (T3) and thyroxine (T4) hormone levels fall.
What if T4 is high and TSH is low?
Doctors may refer to this as “free” T4 (FT4). A high level of TSH and a low level of T4 in the blood could mean you have an underactive thyroid. If your test results show raised TSH but normal T4, you may be at risk of developing an underactive thyroid in the future.
What does low TSH and high T4 mean?
A low level of TSH and high levels of T3 and/or T4 usually means you have an overactive thyroid. Doctors may refer to these measurements as “free” T3 and T4 (FT3 and FT4). What’s considered normal varies depending on things such as your age and the exact testing technique used by the laboratory.
What T4 levels indicate hypothyroidism?
If TSH measures > 4.0 mU/L, a second test (T4) is performed to verify the results. TSH > 4.0/mU/L with a low T4 level indicates hypothyroidism.
Can too much T4 cause weight gain?
According to Dr. Kitahara, if someone has low thyroid function, their TSH is high, and the thyroid hormones known as T3 and T4 are low—and weight gain often occurs. If someone has an overactive thyroid or hyperthyroidism, TSH is usually low, the T3 and T4 are high, and weight loss occurs.