What does it mean if your TSH is low but your T3 and T4 are high?

What does it mean if your TSH is low but your T3 and T4 are high?

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 happens if T3 and T4 are high?

High amounts of T4, T3, or both can cause an excessively high metabolic rate. This is called a hypermetabolic state. When in a hypermetabolic state, you may experience a rapid heart rate, elevated blood pressure, and hand tremors. You may also sweat a lot and develop a low tolerance for heat.

Can you have a normal TSH and abnormal T3 T4?

When the thyroid gland becomes inefficient such as in early hypothyroidism, the TSH becomes elevated even though the T4 and T3 may still be within the “normal” range.

Which is more important T3 T4 or TSH?

Because T4 is converted into another thyroid hormone called T3 (triiodothyronine), free T4 is the more important hormone to measure. Any changes show up in T4 first. T3 and T4 help to control how your body stores and uses energy (metabolism). The thyroid hormones also help control many of your body’s other processes.

What should TSH levels be with Hashimoto’s disease?

If your TSH level is 10.0 mIU/L or higher, most experts agree that treatment is necessary. It’s when your TSH is above the normal range (usually around 4.6) but less than 10.0 mIU/L that things get harder to classify.

What are symptoms of high T3?

Having high T3 levels does not necessarily mean these health risks will occur. If you have abnormal thyroid hormone levels, speak to your doctor about how they may affect you….1) Hyperthyroidism Symptoms

• Tiredness.
• Tremors.
• Anxiety.
• Trouble sleeping.
• Weight loss.
• Heat intolerance.
• Rapid heartbeat.
• Increased thirst.

What is Hashimoto syndrome?

Hashimoto’s disease is a condition in which your immune system attacks your thyroid, a small gland at the base of your neck below your Adam’s apple. The thyroid gland is part of your endocrine system, which produces hormones that coordinate many of your body’s functions.

Does T3 affect TSH levels?

T3 is the predominant inhibitor of TSH secretion. Because TSH secretion is so sensitive to minor changes in free T4 through this negative feedback loop, abnormal TSH levels are detected earlier than those of free T4 in hypothyroidism and hyperthyroidism.

What does high FT4 and low TSH mean?

Responses (1) The T4 is the main thyroid hormone. If the TSH is normal and the T4 is high, it can indicate certain things with your thyroid. The first being hyperthryoid. Other tests have to be done tho, just those tests aren’t diagnostic and you need further testing.

What are the symptoms of high TSH?

The list of common symptoms of high TSH levels includes weakness, fatigue, difficulty waking up, difficulty losing weight and/or weight gain, roughening of the hair and skin, hair loss, a pale or yellow tinge to skin, brittle nails, intolerance to cold, constipation, depression, mood swings, abnormal menstruation, decreased sex drive and memory loss.

What does it mean to have high T3 T4?

High levels of all three of these, tsh , t3, ( liothyronine) and t4, is due to the pituitary gland causing too much tsh, which causes the thyroid to make too much T3 (liothyronine) and t4. Normally, high T3 (liothyronine) and T4 will cause the TSH to be low, but high levels of all 3 suggest a possible pituitary tumor making too much tsh.

What does it mean if your T4 is too high?

The T4 test is known as the thyroxine test. A high level of T4 indicates an overactive thyroid (hyperthyroidism). Symptoms include anxiety, unplanned weight loss, tremors, and diarrhea. Most of the T4 in your body is bound to protein. A small portion of T4 is not and this is called free T4.